12907217 has 2 divisors, whose sum is σ = 12907218. Its totient is φ = 12907216.

The previous prime is 12907183. The next prime is 12907229. The reversal of 12907217 is 71270921.

12907217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7929856 + 4977361 = 2816^2 + 2231^2 .

It is a cyclic number.

It is not a de Polignac number, because 12907217 - 2¹⁰ = 12906193 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12907217.

It is not a weakly prime, because it can be changed into another prime (12907717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6453608 + 6453609.

It is an arithmetic number, because the mean of its divisors is an integer number (6453609).

Almost surely, 2^12907217 is an apocalyptic number.

It is an amenable number.

12907217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12907217 is an equidigital number, since it uses as much as digits as its factorization.

12907217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 12907217 is about 3592.6615482119. The cubic root of 12907217 is about 234.5727380613.

The spelling of 12907217 in words is "twelve million, nine hundred seven thousand, two hundred seventeen".