12147166 has 4 divisors (see below), whose sum is σ = 18220752. Its totient is φ = 6073582.

The previous prime is 12147139. The next prime is 12147173. The reversal of 12147166 is 66174121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66174121 = 13 ⋅5090317.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3036790 + ... + 3036793.

It is an arithmetic number, because the mean of its divisors is an integer number (4555188).

Almost surely, 2^12147166 is an apocalyptic number.

12147166 is a deficient number, since it is larger than the sum of its proper divisors (6073586).

12147166 is an equidigital number, since it uses as much as digits as its factorization.

12147166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6073585.

The product of its digits is 2016, while the sum is 28.

The square root of 12147166 is about 3485.2784680711. The cubic root of 12147166 is about 229.8749540818.

The spelling of 12147166 in words is "twelve million, one hundred forty-seven thousand, one hundred sixty-six".