12168257 has 2 divisors, whose sum is σ = 12168258. Its totient is φ = 12168256.

The previous prime is 12168239. The next prime is 12168271. The reversal of 12168257 is 75286121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6195121 + 5973136 = 2489^2 + 2444^2 .

It is a cyclic number.

It is not a de Polignac number, because 12168257 - 2⁸ = 12168001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12168287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6084128 + 6084129.

It is an arithmetic number, because the mean of its divisors is an integer number (6084129).

Almost surely, 2^12168257 is an apocalyptic number.

It is an amenable number.

12168257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12168257 is an equidigital number, since it uses as much as digits as its factorization.

12168257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 32.

The square root of 12168257 is about 3488.3028824917. The cubic root of 12168257 is about 230.0079203322.

The spelling of 12168257 in words is "twelve million, one hundred sixty-eight thousand, two hundred fifty-seven".