13211230091 has 2 divisors, whose sum is σ = 13211230092. Its totient is φ = 13211230090.

The previous prime is 13211230079. The next prime is 13211230117. The reversal of 13211230091 is 19003211231.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13211230091 is a prime.

It is not a weakly prime, because it can be changed into another prime (13211236091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6605615045 + 6605615046.

It is an arithmetic number, because the mean of its divisors is an integer number (6605615046).

Almost surely, 2^13211230091 is an apocalyptic number.

13211230091 is a deficient number, since it is larger than the sum of its proper divisors (1).

13211230091 is an equidigital number, since it uses as much as digits as its factorization.

13211230091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 13211230091 in words is "thirteen billion, two hundred eleven million, two hundred thirty thousand, ninety-one".