12131166 has 32 divisors (see below), whose sum is σ = 26811648. Its totient is φ = 3639680.

The previous prime is 12131159. The next prime is 12131173. The reversal of 12131166 is 66113121.

It is an interprime number because it is at equal distance from previous prime (12131159) and next prime (12131173).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240 + ... + 4931.

It is an arithmetic number, because the mean of its divisors is an integer number (837864).

Almost surely, 2^12131166 is an apocalyptic number.

12131166 is an abundant number, since it is smaller than the sum of its proper divisors (14680482).

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

12131166 is a wasteful number, since it uses less digits than its factorization.

12131166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5216.

The product of its digits is 216, while the sum is 21.

The square root of 12131166 is about 3482.9823427632. The cubic root of 12131166 is about 229.7739808641.

Adding to 12131166 its reverse (66113121), we get a palindrome (78244287).

The spelling of 12131166 in words is "twelve million, one hundred thirty-one thousand, one hundred sixty-six".