22224231656 has 24 divisors (see below), whose sum is σ = 45803041410. Its totient is φ = 10101923040.

The previous prime is 22224231649. The next prime is 22224231661. The reversal of 22224231656 is 65613242222.

It can be written as a sum of positive squares in only one way, i.e., 15587522500 + 6636709156 = 124850^2 + 81466^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11478491 + ... + 11480426.

Almost surely, 2^22224231656 is an apocalyptic number.

It is an amenable number.

22224231656 is an abundant number, since it is smaller than the sum of its proper divisors (23578809754).

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

22224231656 is a wasteful number, since it uses less digits than its factorization.

22224231656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22958945 (or 22958930 counting only the distinct ones).

The product of its digits is 69120, while the sum is 35.

Adding to 22224231656 its reverse (65613242222), we get a palindrome (87837473878).

The spelling of 22224231656 in words is "twenty-two billion, two hundred twenty-four million, two hundred thirty-one thousand, six hundred fifty-six".