12166013 has 2 divisors, whose sum is σ = 12166014. Its totient is φ = 12166012.

The previous prime is 12165983. The next prime is 12166019. The reversal of 12166013 is 31066121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12020089 + 145924 = 3467^2 + 382^2 .

It is a cyclic number.

It is not a de Polignac number, because 12166013 - 2⁶ = 12165949 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12166019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6083006 + 6083007.

It is an arithmetic number, because the mean of its divisors is an integer number (6083007).

Almost surely, 2^12166013 is an apocalyptic number.

It is an amenable number.

12166013 is a deficient number, since it is larger than the sum of its proper divisors (1).

12166013 is an equidigital number, since it uses as much as digits as its factorization.

12166013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 12166013 is about 3487.9812212797. The cubic root of 12166013 is about 229.9937805502.

The spelling of 12166013 in words is "twelve million, one hundred sixty-six thousand, thirteen".