How To Write Trillion
The Chicago Manual of Style (Chicago style), recommends spelling out whole numbers through one hundred with words such as million, billion, and trillion. 2. The human brain is made up of approximately one hundred billion.
Trillion is a number with two distinct definitions...
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 15 zeros after it: 1,000,000,000,000,000. There are, of course, many.