13211999791 has 2 divisors, whose sum is σ = 13211999792. Its totient is φ = 13211999790.

The previous prime is 13211999753. The next prime is 13211999797. The reversal of 13211999791 is 19799911231.

It is a strong prime.

It is an emirp because it is prime and its reverse (19799911231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13211999791 - 2²⁵ = 13178445359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13211999797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6605999895 + 6605999896.

It is an arithmetic number, because the mean of its divisors is an integer number (6605999896).

Almost surely, 2^13211999791 is an apocalyptic number.

13211999791 is a deficient number, since it is larger than the sum of its proper divisors (1).

13211999791 is an equidigital number, since it uses as much as digits as its factorization.

13211999791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 275562, while the sum is 52.

The spelling of 13211999791 in words is "thirteen billion, two hundred eleven million, nine hundred ninety-nine thousand, seven hundred ninety-one".