13311232219991 has 2 divisors, whose sum is σ = 13311232219992. Its totient is φ = 13311232219990.

The previous prime is 13311232219937. The next prime is 13311232220047. The reversal of 13311232219991 is 19991223211331.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13311232219991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13311232219921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6655616109995 + 6655616109996.

It is an arithmetic number, because the mean of its divisors is an integer number (6655616109996).

Almost surely, 2^{13311232219991} is an apocalyptic number.

13311232219991 is a deficient number, since it is larger than the sum of its proper divisors (1).

13311232219991 is an equidigital number, since it uses as much as digits as its factorization.

13311232219991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 157464, while the sum is 47.

The spelling of 13311232219991 in words is "thirteen trillion, three hundred eleven billion, two hundred thirty-two million, two hundred nineteen thousand, nine hundred ninety-one".