12697171 has 2 divisors, whose sum is σ = 12697172. Its totient is φ = 12697170.

The previous prime is 12697151. The next prime is 12697189. The reversal of 12697171 is 17179621.

It is a strong prime.

It is an emirp because it is prime and its reverse (17179621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12697171 - 2⁷ = 12697043 is a prime.

It is a super-2 number, since 2×12697171² = 322436302806482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12697121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6348585 + 6348586.

It is an arithmetic number, because the mean of its divisors is an integer number (6348586).

Almost surely, 2^12697171 is an apocalyptic number.

12697171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12697171 is an equidigital number, since it uses as much as digits as its factorization.

12697171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 34.

The square root of 12697171 is about 3563.3089958633. The cubic root of 12697171 is about 233.2933303304.

The spelling of 12697171 in words is "twelve million, six hundred ninety-seven thousand, one hundred seventy-one".