22012557556 has 48 divisors (see below), whose sum is σ = 43233724800. Its totient is φ = 9718600320.

The previous prime is 22012557493. The next prime is 22012557557. The reversal of 22012557556 is 65575521022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012557557) 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, 963886 + ... + 986458.

It is an arithmetic number, because the mean of its divisors is an integer number (900702600).

Almost surely, 2^22012557556 is an apocalyptic number.

It is an amenable number.

22012557556 is a deficient number, since it is larger than the sum of its proper divisors (21221167244).

22012557556 is a wasteful number, since it uses less digits than its factorization.

22012557556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23224 (or 23222 counting only the distinct ones).

The product of its (nonzero) digits is 210000, while the sum is 40.

The spelling of 22012557556 in words is "twenty-two billion, twelve million, five hundred fifty-seven thousand, five hundred fifty-six".