22131221352120 has 96 divisors (see below), whose sum is σ = 71975973139200. Its totient is φ = 5897597181696.

The previous prime is 22131221352103. The next prime is 22131221352127. The reversal of 22131221352120 is 2125312213122.

22131221352120 is a `hidden beast` number, since 2 + 2 + 1 + 3 + 122 + 13 + 521 + 2 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22131221352127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20631640 + ... + 21677799.

It is an arithmetic number, because the mean of its divisors is an integer number (749749720200).

Almost surely, 2^{22131221352120} is an apocalyptic number.

22131221352120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22131221352120 is an abundant number, since it is smaller than the sum of its proper divisors (49844751787080).

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

22131221352120 is a wasteful number, since it uses less digits than its factorization.

22131221352120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42310909 (or 42310902 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 22131221352120 its reverse (2125312213122), we get a palindrome (24256533565242).

The spelling of 22131221352120 in words is "twenty-two trillion, one hundred thirty-one billion, two hundred twenty-one million, three hundred fifty-two thousand, one hundred twenty".