12166171 has 2 divisors, whose sum is σ = 12166172. Its totient is φ = 12166170.

The previous prime is 12166163. The next prime is 12166181. The reversal of 12166171 is 17166121.

It is a happy number.

12166171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12166171 - 2³ = 12166163 is a prime.

It is not a weakly prime, because it can be changed into another prime (12166181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6083085 + 6083086.

It is an arithmetic number, because the mean of its divisors is an integer number (6083086).

Almost surely, 2^12166171 is an apocalyptic number.

12166171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12166171 is an equidigital number, since it uses as much as digits as its factorization.

12166171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 25.

The square root of 12166171 is about 3488.0038704107. The cubic root of 12166171 is about 229.9947761889.

The spelling of 12166171 in words is "twelve million, one hundred sixty-six thousand, one hundred seventy-one".