12171164 has 12 divisors (see below), whose sum is σ = 21418488. Its totient is φ = 6051600.

The previous prime is 12171161. The next prime is 12171179. The reversal of 12171164 is 46117121.

It is a happy number.

It is a super-2 number, since 2×12171164² = 296274466229792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12171161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7682 + ... + 9129.

It is an arithmetic number, because the mean of its divisors is an integer number (1784874).

Almost surely, 2^12171164 is an apocalyptic number.

It is an amenable number.

12171164 is a deficient number, since it is larger than the sum of its proper divisors (9247324).

12171164 is a wasteful number, since it uses less digits than its factorization.

12171164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16996 (or 16994 counting only the distinct ones).

The product of its digits is 336, while the sum is 23.

The square root of 12171164 is about 3488.7195358756. The cubic root of 12171164 is about 230.0262351926.

Adding to 12171164 its reverse (46117121), we get a palindrome (58288285).

The spelling of 12171164 in words is "twelve million, one hundred seventy-one thousand, one hundred sixty-four".