13230211021991 has 2 divisors, whose sum is σ = 13230211021992. Its totient is φ = 13230211021990.

The previous prime is 13230211021921. The next prime is 13230211022023. The reversal of 13230211021991 is 19912011203231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13230211021991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13230211021921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615105510995 + 6615105510996.

It is an arithmetic number, because the mean of its divisors is an integer number (6615105510996).

Almost surely, 2^{13230211021991} is an apocalyptic number.

13230211021991 is a deficient number, since it is larger than the sum of its proper divisors (1).

13230211021991 is an equidigital number, since it uses as much as digits as its factorization.

13230211021991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 35.

The spelling of 13230211021991 in words is "thirteen trillion, two hundred thirty billion, two hundred eleven million, twenty-one thousand, nine hundred ninety-one".