22123981952 has 24 divisors (see below), whose sum is σ = 44078473035. Its totient is φ = 11061149568.

The previous prime is 22123981921. The next prime is 22123981973. The reversal of 22123981952 is 25918932122.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 11061990976 + 11061990976 = 105176^2 + 105176^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=105176.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1676243 + ... + 1689389.

Almost surely, 2^22123981952 is an apocalyptic number.

It is an amenable number.

22123981952 is a deficient number, since it is larger than the sum of its proper divisors (21954491083).

22123981952 is an frugal number, since it uses more digits than its factorization.

22123981952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26308 (or 13149 counting only the distinct ones).

The product of its digits is 155520, while the sum is 44.

The spelling of 22123981952 in words is "twenty-two billion, one hundred twenty-three million, nine hundred eighty-one thousand, nine hundred fifty-two".