12166291 has 8 divisors (see below), whose sum is σ = 12852224. Its totient is φ = 11498760.

The previous prime is 12166261. The next prime is 12166307. The reversal of 12166291 is 19266121.

12166291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12166291 - 2⁷ = 12166163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12166201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3231 + ... + 5896.

It is an arithmetic number, because the mean of its divisors is an integer number (1606528).

Almost surely, 2^12166291 is an apocalyptic number.

12166291 is a deficient number, since it is larger than the sum of its proper divisors (685933).

12166291 is an equidigital number, since it uses as much as digits as its factorization.

12166291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9201.

The product of its digits is 1296, while the sum is 28.

The square root of 12166291 is about 3488.0210721841. The cubic root of 12166291 is about 229.9955323644.

The spelling of 12166291 in words is "twelve million, one hundred sixty-six thousand, two hundred ninety-one".