22224256556 has 12 divisors (see below), whose sum is σ = 38910629520. Its totient is φ = 11106933840.

The previous prime is 22224256501. The next prime is 22224256573. The reversal of 22224256556 is 65565242222.

It is a super-2 number, since 2×22224256556² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1288976 + ... + 1306103.

It is an arithmetic number, because the mean of its divisors is an integer number (3242552460).

Almost surely, 2^22224256556 is an apocalyptic number.

It is an amenable number.

22224256556 is a deficient number, since it is larger than the sum of its proper divisors (16686372964).

22224256556 is a wasteful number, since it uses less digits than its factorization.

22224256556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2597224 (or 2597222 counting only the distinct ones).

The product of its digits is 576000, while the sum is 41.

Adding to 22224256556 its reverse (65565242222), we get a palindrome (87789498778).

The spelling of 22224256556 in words is "twenty-two billion, two hundred twenty-four million, two hundred fifty-six thousand, five hundred fifty-six".