12166901 has 2 divisors, whose sum is σ = 12166902. Its totient is φ = 12166900.

The previous prime is 12166879. The next prime is 12166909. The reversal of 12166901 is 10966121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9156676 + 3010225 = 3026^2 + 1735^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12166901 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 (12166909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6083450 + 6083451.

It is an arithmetic number, because the mean of its divisors is an integer number (6083451).

Almost surely, 2^12166901 is an apocalyptic number.

It is an amenable number.

12166901 is a deficient number, since it is larger than the sum of its proper divisors (1).

12166901 is an equidigital number, since it uses as much as digits as its factorization.

12166901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 12166901 is about 3488.1085132203. The cubic root of 12166901 is about 229.9993761798. Note that the first 3 decimals are identical.

The spelling of 12166901 in words is "twelve million, one hundred sixty-six thousand, nine hundred one".