13212907 has 2 divisors, whose sum is σ = 13212908. Its totient is φ = 13212906.

The previous prime is 13212883. The next prime is 13212917. The reversal of 13212907 is 70921231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13212907 is a prime.

It is a super-2 number, since 2×13212907² = 349161822781298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13212917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6606453 + 6606454.

It is an arithmetic number, because the mean of its divisors is an integer number (6606454).

Almost surely, 2^13212907 is an apocalyptic number.

13212907 is a deficient number, since it is larger than the sum of its proper divisors (1).

13212907 is an equidigital number, since it uses as much as digits as its factorization.

13212907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 13212907 is about 3634.9562583338. The cubic root of 13212907 is about 236.4101540908.

The spelling of 13212907 in words is "thirteen million, two hundred twelve thousand, nine hundred seven".