Centummillion or uncentillion is a 1 followed by 306 zeros.
uncentillion.
Duocentillion
In the standard naming system for large numbers, a centillion is equal to 10^303. Therefore, the prefix "un-" would indicate a number that is one less than a centillion, which would be 10^303 - 1. However, this naming system is not universally agreed upon, and different systems may have different names for extremely large numbers. In some systems, "uncentillion" may indeed be considered a number, although it is not commonly used in mainstream mathematics.
After uncentillion, the next number in the short scale is decicentillion, which is 10^36. In the long scale, the term that follows uncentillion is duodecillion, representing 10^72. The naming convention continues by adding prefixes based on Latin numerals, with each new term typically representing a power of 1,000.
how many zeros in one billion
Seven zeros.
101 zeros
12 zeros.12 zeros.12 zeros.12 zeros.
33 zeros
there are 21 zeros
Six zeros: 127,000,000
how many zeros in 12 lakh