12224665872 has 60 divisors (see below), whose sum is σ = 34229860860. Its totient is φ = 4072771584.

The previous prime is 12224665861. The next prime is 12224665897. The reversal of 12224665872 is 27856642221.

12224665872 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 4 + 66 + 587 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11529605376 + 695060496 = 107376^2 + 26364^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 269404 + ... + 311492.

It is an arithmetic number, because the mean of its divisors is an integer number (570497681).

Almost surely, 2^12224665872 is an apocalyptic number.

12224665872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12224665872 is an abundant number, since it is smaller than the sum of its proper divisors (22005194988).

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

12224665872 is a wasteful number, since it uses less digits than its factorization.

12224665872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44120 (or 44111 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The spelling of 12224665872 in words is "twelve billion, two hundred twenty-four million, six hundred sixty-five thousand, eight hundred seventy-two".