Ten Quintillions
1 followed by 18 zeros (one to the power of ten to the 18th) is One Quintillion
1 followed by 19 zeros (one to the power of ten to the 19th) is Ten Quintillion
1 followed by 20 zeros (one to the power of ten to the 20th) is One Hundred Quintillion
1 followed by 21 zeros (one to the power of ten to the 21st) is One Sextillion
& so on...
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1,000,000,000,000 is 1 trillion a 1 followed by 12 zeros a 1 followed by 15 zeros is 1 quardrillion
Some say a googol is 1 followed by 99 zeros & some say it has 100 zeros. I think it's 100. A dotrigintillion is 1 followed by 99 zeros.
if you mean a number followed by 12 zeros like this: 1000000000000 then that is 1 trillion
A googol is 10 to the power of 100, and a googolplex is 10 to the power of a googol (or 10 to the power of 10^100). A googolplexian is 10 to the power of a googolplex, which is a number so large it's practically incomprehensible. The number of zeros in a googolplexian would be a 1 followed by a googolplex number of zeros.
The number 1 followed by 100 zeros is called a googol. The number in scientific notation is written 1 x 10100. A googolplex is the number 1 followed by a googol zeros, 1010100.