22021130232 has 64 divisors (see below), whose sum is σ = 61559517600. Its totient is φ = 7293611520.

The previous prime is 22021130129. The next prime is 22021130233. The reversal of 22021130232 is 23203112022.

22021130232 is a `hidden beast` number, since 220 + 211 + 3 + 0 + 232 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021130233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290769 + ... + 358592.

Almost surely, 2^22021130232 is an apocalyptic number.

It is an amenable number.

22021130232 is an abundant number, since it is smaller than the sum of its proper divisors (39538387368).

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

22021130232 is a wasteful number, since it uses less digits than its factorization.

22021130232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649533 (or 649523 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22021130232 its reverse (23203112022), we get a palindrome (45224242254).

The spelling of 22021130232 in words is "twenty-two billion, twenty-one million, one hundred thirty thousand, two hundred thirty-two".