12166120 has 16 divisors (see below), whose sum is σ = 27373860. Its totient is φ = 4866432.

The previous prime is 12166073. The next prime is 12166139. The reversal of 12166120 is 2166121.

It can be written as a sum of positive squares in 2 ways, for example, as 12152196 + 13924 = 3486^2 + 118^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152037 + ... + 152116.

Almost surely, 2^12166120 is an apocalyptic number.

12166120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12166120 is an abundant number, since it is smaller than the sum of its proper divisors (15207740).

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

12166120 is a wasteful number, since it uses less digits than its factorization.

12166120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304164 (or 304160 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 12166120 is about 3487.9965596313. The cubic root of 12166120 is about 229.9944548127.

Subtracting from 12166120 its reverse (2166121), we obtain a palindrome (9999999).

The spelling of 12166120 in words is "twelve million, one hundred sixty-six thousand, one hundred twenty".