https://blog.oxforddictionaries.com/2014/12/09/psy-youtube-quintillion/

Dec 9, 2014 ... These numbers are simply so large that their use is fairly infrequent, especially above sextillion, after which you see example sentences like ...

https://faculty.math.illinois.edu/~castelln/prillion_revised_10-05.pdf

But where do we go from million? After a billion, of course, is trillion. Then comes quadrillion, quintrillion, sextillion, septillion, octillion, nonillion, and decillion.

https://en.wikipedia.org/wiki/Names_of_large_numbers

This article lists and discusses the usage and derivation of names of large numbers, together .... Even well-established names like sextillion are rarely used, since in the .... then, a specific finite number, equal to 1 with a googol zeros after it .

http://mathforum.org/library/drmath/view/59155.html

Feb 11, 1997 ... After trillion, how far can you go with genuine math names (we got to quadrillion, quintillion, sextillion and septillion, but after that the dictionary ...

https://www.thoughtco.com/bigger-than-a-trillion-1857463

Mar 25, 2019 ... Have you ever wondered what number comes after a trillion? Or how ... Sextillion, 21, 7 ... How many zeros come after the one in a trillion?

https://www.thoughtco.com/zeros-in-million-billion-trillion-2312346

Jan 20, 2019 ... If you have ever wondered what number comes after a trillion, read on. For example, do ... Sextillion 1,000,000,000,000,000,000,000 (21 zeros)

https://blog.prepscholar.com/what-comes-after-trillion

Jul 25, 2018 ... Trillion is a 1 with 12 zeros after it, and it looks like this: 1,000,000,000,000. The next named number after trillion is quadrillion, which is a 1 with ...

http://www.math.com/tables/general/numnotation.htm

trillion, 1 with 12 zeros, 1 with 18 zeros. quadrillion, 1 with 15 zeros, 1 with 24 zeros. quintillion, 1 with 18 zeros, 1 with 30 zeros. sextillion, 1 with 21 zeros, 1 with ...

https://www.macquariedictionary.com.au/resources/view/resource/8/

Name, Value in powers of ten, Number of zeros. Number of groups of three. zeros after 1000. billion, 109, 9, 2. trillion, 1012, 12, 3. quadrillion, 1015, 15, 4.

https://www.quora.com/Whats-after-a-trillion-in-math

One trillion and one. If the question was the other way round, considering a million is 1, Billion,Trillion, Quadrillion, Quintillion, Sextillion, ...