12912259 has 2 divisors, whose sum is σ = 12912260. Its totient is φ = 12912258.

The previous prime is 12912257. The next prime is 12912271. The reversal of 12912259 is 95221921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12912259 - 2¹ = 12912257 is a prime.

Together with 12912257, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12912259.

It is not a weakly prime, because it can be changed into another prime (12912257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6456129 + 6456130.

It is an arithmetic number, because the mean of its divisors is an integer number (6456130).

Almost surely, 2^12912259 is an apocalyptic number.

12912259 is a deficient number, since it is larger than the sum of its proper divisors (1).

12912259 is an equidigital number, since it uses as much as digits as its factorization.

12912259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 31.

The square root of 12912259 is about 3593.3631878785. The cubic root of 12912259 is about 234.6032781272.

The spelling of 12912259 in words is "twelve million, nine hundred twelve thousand, two hundred fifty-nine".