202102120920 has 96 divisors (see below), whose sum is σ = 705295177200. Its totient is φ = 46194769152.

The previous prime is 202102120907. The next prime is 202102120921. The reversal of 202102120920 is 29021201202.

It is a happy number.

202102120920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202102120921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17179675 + ... + 17191434.

Almost surely, 2^202102120920 is an apocalyptic number.

202102120920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202102120920 is an abundant number, since it is smaller than the sum of its proper divisors (503193056280).

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

202102120920 is a wasteful number, since it uses less digits than its factorization.

202102120920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34371137 (or 34371126 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The spelling of 202102120920 in words is "two hundred two billion, one hundred two million, one hundred twenty thousand, nine hundred twenty".