121102102021100 has 18 divisors (see below), whose sum is σ = 262791561386004. Its totient is φ = 48440840808400.

The previous prime is 121102102021091. The next prime is 121102102021163. The reversal of 121102102021100 is 1120201201121.

It is a super-2 number, since 2×121102102021100² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 605510510006 + ... + 605510510205.

Almost surely, 2^{121102102021100} is an apocalyptic number.

121102102021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121102102021100 is an abundant number, since it is smaller than the sum of its proper divisors (141689459364904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121102102021100 is a wasteful number, since it uses less digits than its factorization.

121102102021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211021020225 (or 1211021020218 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121102102021100 its reverse (1120201201121), we get a palindrome (122222303222221).

The spelling of 121102102021100 in words is "one hundred twenty-one trillion, one hundred two billion, one hundred two million, twenty-one thousand, one hundred".