12187166 has 16 divisors (see below), whose sum is σ = 18754944. Its totient is φ = 5937624.

The previous prime is 12187121. The next prime is 12187183. The reversal of 12187166 is 66178121.

It is a happy number.

It is a super-2 number, since 2×12187166² = 297054030223112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13361 + ... + 14243.

It is an arithmetic number, because the mean of its divisors is an integer number (1172184).

Almost surely, 2^12187166 is an apocalyptic number.

12187166 is a deficient number, since it is larger than the sum of its proper divisors (6567778).

12187166 is a wasteful number, since it uses less digits than its factorization.

12187166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055.

The product of its digits is 4032, while the sum is 32.

The square root of 12187166 is about 3491.0121741409. The cubic root of 12187166 is about 230.1269998045.

The spelling of 12187166 in words is "twelve million, one hundred eighty-seven thousand, one hundred sixty-six".