13121312179 has 2 divisors, whose sum is σ = 13121312180. Its totient is φ = 13121312178.

The previous prime is 13121312177. The next prime is 13121312203. The reversal of 13121312179 is 97121312131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13121312179 - 2¹ = 13121312177 is a prime.

Together with 13121312177, 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 13121312179.

It is not a weakly prime, because it can be changed into another prime (13121312177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560656089 + 6560656090.

It is an arithmetic number, because the mean of its divisors is an integer number (6560656090).

Almost surely, 2^13121312179 is an apocalyptic number.

13121312179 is a deficient number, since it is larger than the sum of its proper divisors (1).

13121312179 is an equidigital number, since it uses as much as digits as its factorization.

13121312179 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 31.

The spelling of 13121312179 in words is "thirteen billion, one hundred twenty-one million, three hundred twelve thousand, one hundred seventy-nine".