22121554116 has 24 divisors (see below), whose sum is σ = 51686827360. Its totient is φ = 7363870272.

The previous prime is 22121554097. The next prime is 22121554127. The reversal of 22121554116 is 61145512122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1238401 + ... + 1256136.

Almost surely, 2^22121554116 is an apocalyptic number.

It is an amenable number.

22121554116 is an abundant number, since it is smaller than the sum of its proper divisors (29565273244).

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

22121554116 is a wasteful number, since it uses less digits than its factorization.

22121554116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495283 (or 2495281 counting only the distinct ones).

The product of its digits is 4800, while the sum is 30.

The spelling of 22121554116 in words is "twenty-two billion, one hundred twenty-one million, five hundred fifty-four thousand, one hundred sixteen".