12917171 has 2 divisors, whose sum is σ = 12917172. Its totient is φ = 12917170.

The previous prime is 12917167. The next prime is 12917183. The reversal of 12917171 is 17171921.

12917171 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 12917171 - 2² = 12917167 is a prime.

It is not a weakly prime, because it can be changed into another prime (12917141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6458585 + 6458586.

It is an arithmetic number, because the mean of its divisors is an integer number (6458586).

Almost surely, 2^12917171 is an apocalyptic number.

12917171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12917171 is an equidigital number, since it uses as much as digits as its factorization.

12917171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 882, while the sum is 29.

The square root of 12917171 is about 3594.0466051514. The cubic root of 12917171 is about 234.6330231214.

The spelling of 12917171 in words is "twelve million, nine hundred seventeen thousand, one hundred seventy-one".