12167217172 has 24 divisors (see below), whose sum is σ = 23270073120. Its totient is φ = 5520612960.

The previous prime is 12167217163. The next prime is 12167217173. The reversal of 12167217172 is 27171276121.

It is a super-2 number, since 2×12167217172² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12167217173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223722 + ... + 272737.

It is an arithmetic number, because the mean of its divisors is an integer number (969586380).

Almost surely, 2^12167217172 is an apocalyptic number.

It is an amenable number.

12167217172 is a deficient number, since it is larger than the sum of its proper divisors (11102855948).

12167217172 is a wasteful number, since it uses less digits than its factorization.

12167217172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497031 (or 497029 counting only the distinct ones).

The product of its digits is 16464, while the sum is 37.

The spelling of 12167217172 in words is "twelve billion, one hundred sixty-seven million, two hundred seventeen thousand, one hundred seventy-two".