202100102120120 has 32 divisors (see below), whose sum is σ = 454726429653600. Its totient is φ = 80839827535488.

The previous prime is 202100102120113. The next prime is 202100102120123. The reversal of 202100102120120 is 21021201001202.

It is a junction number, because it is equal to n+sod(n) for n = 202100102120095 and 202100102120104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202100102120123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9145466 + ... + 22087094.

It is an arithmetic number, because the mean of its divisors is an integer number (14210200926675).

Almost surely, 2^{202100102120120} is an apocalyptic number.

202100102120120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202100102120120 is an abundant number, since it is smaller than the sum of its proper divisors (252626327533480).

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

202100102120120 is a wasteful number, since it uses less digits than its factorization.

202100102120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13332047 (or 13332043 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 202100102120120 its reverse (21021201001202), we get a palindrome (223121303121322).

The spelling of 202100102120120 in words is "two hundred two trillion, one hundred billion, one hundred two million, one hundred twenty thousand, one hundred twenty".