122102021100 has 72 divisors (see below), whose sum is σ = 353853115840. Its totient is φ = 32507887680.

The previous prime is 122102021047. The next prime is 122102021117. The reversal of 122102021100 is 1120201221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143062 + ... + 514461.

Almost surely, 2^122102021100 is an apocalyptic number.

122102021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122102021100 is an abundant number, since it is smaller than the sum of its proper divisors (231751094740).

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

122102021100 is a wasteful number, since it uses less digits than its factorization.

122102021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658159 (or 658152 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 122102021100 its reverse (1120201221), we get a palindrome (123222222321).

The spelling of 122102021100 in words is "one hundred twenty-two billion, one hundred two million, twenty-one thousand, one hundred".