What do you call the numeral one followed by a million zeros?
There is no specific name for the number, which is written as 101000000 , or ten to the millionth power. A googol is much smaller, having "only" 100 zeroes. A googolplex, which is 1 followed by a googol of zeroes, is much larger (so large, in fact, that it can never be written out as a "normal" number like 100 or 1000).