12913211 has 2 divisors, whose sum is σ = 12913212. Its totient is φ = 12913210.

The previous prime is 12913181. The next prime is 12913231. The reversal of 12913211 is 11231921.

It is an a-pointer prime, because the next prime (12913231) can be obtained adding 12913211 to its sum of digits (20).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12913211 - 2¹⁰ = 12912187 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12913231) 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, 6456605 + 6456606.

It is an arithmetic number, because the mean of its divisors is an integer number (6456606).

Almost surely, 2^12913211 is an apocalyptic number.

12913211 is a deficient number, since it is larger than the sum of its proper divisors (1).

12913211 is an equidigital number, since it uses as much as digits as its factorization.

12913211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 20.

The square root of 12913211 is about 3593.4956518688. The cubic root of 12913211 is about 234.6090436258.

The spelling of 12913211 in words is "twelve million, nine hundred thirteen thousand, two hundred eleven".