202123200120 has 32 divisors (see below), whose sum is σ = 606369600720. Its totient is φ = 53899520000.

The previous prime is 202123200101. The next prime is 202123200137. The reversal of 202123200120 is 21002321202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 202123200120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 842179881 + ... + 842180120.

Almost surely, 2^202123200120 is an apocalyptic number.

202123200120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202123200120 is an abundant number, since it is smaller than the sum of its proper divisors (404246400600).

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

202123200120 is a wasteful number, since it uses less digits than its factorization.

202123200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684360015 (or 1684360011 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 202123200120 its reverse (21002321202), we get a palindrome (223125521322).

The spelling of 202123200120 in words is "two hundred two billion, one hundred twenty-three million, two hundred thousand, one hundred twenty".