22121331224 has 64 divisors (see below), whose sum is σ = 43538796000. Its totient is φ = 10526663680.

The previous prime is 22121331179. The next prime is 22121331247. The reversal of 22121331224 is 42213312122.

It is a self number, because there is not a number n which added to its sum of digits gives 22121331224.

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, 3108182 + ... + 3115290.

Almost surely, 2^22121331224 is an apocalyptic number.

It is an amenable number.

22121331224 is a deficient number, since it is larger than the sum of its proper divisors (21417464776).

22121331224 is a wasteful number, since it uses less digits than its factorization.

22121331224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7388 (or 7384 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

Adding to 22121331224 its reverse (42213312122), we get a palindrome (64334643346).

The spelling of 22121331224 in words is "twenty-two billion, one hundred twenty-one million, three hundred thirty-one thousand, two hundred twenty-four".