22331113520 has 20 divisors (see below), whose sum is σ = 51919839120. Its totient is φ = 8932445376.

The previous prime is 22331113489. The next prime is 22331113529. The reversal of 22331113520 is 2531113322.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (22331113529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139569380 + ... + 139569539.

It is an arithmetic number, because the mean of its divisors is an integer number (2595991956).

Almost surely, 2^22331113520 is an apocalyptic number.

22331113520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22331113520 is an abundant number, since it is smaller than the sum of its proper divisors (29588725600).

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

22331113520 is a wasteful number, since it uses less digits than its factorization.

22331113520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279138932 (or 279138926 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 22331113520 its reverse (2531113322), we get a palindrome (24862226842).

The spelling of 22331113520 in words is "twenty-two billion, three hundred thirty-one million, one hundred thirteen thousand, five hundred twenty".