21313200232120 has 64 divisors (see below), whose sum is σ = 48001570056000. Its totient is φ = 8516951866368.

The previous prime is 21313200232099. The next prime is 21313200232133. The reversal of 21313200232120 is 2123200231312.

It is a junction number, because it is equal to n+sod(n) for n = 21313200232091 and 21313200232100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170316294 + ... + 170441386.

It is an arithmetic number, because the mean of its divisors is an integer number (750024532125).

Almost surely, 2^{21313200232120} is an apocalyptic number.

21313200232120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21313200232120 is an abundant number, since it is smaller than the sum of its proper divisors (26688369823880).

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

21313200232120 is a wasteful number, since it uses less digits than its factorization.

21313200232120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129232 (or 129228 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21313200232120 its reverse (2123200231312), we get a palindrome (23436400463432).

The spelling of 21313200232120 in words is "twenty-one trillion, three hundred thirteen billion, two hundred million, two hundred thirty-two thousand, one hundred twenty".