131012221411991 has 2 divisors, whose sum is σ = 131012221411992. Its totient is φ = 131012221411990.

The previous prime is 131012221411969. The next prime is 131012221412021. The reversal of 131012221411991 is 199114122210131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131012221411991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131012221411921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65506110705995 + 65506110705996.

It is an arithmetic number, because the mean of its divisors is an integer number (65506110705996).

Almost surely, 2^{131012221411991} is an apocalyptic number.

131012221411991 is a deficient number, since it is larger than the sum of its proper divisors (1).

131012221411991 is an equidigital number, since it uses as much as digits as its factorization.

131012221411991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 38.

The spelling of 131012221411991 in words is "one hundred thirty-one trillion, twelve billion, two hundred twenty-one million, four hundred eleven thousand, nine hundred ninety-one".