11331312232091 has 2 divisors, whose sum is σ = 11331312232092. Its totient is φ = 11331312232090.

The previous prime is 11331312232081. The next prime is 11331312232127. The reversal of 11331312232091 is 19023221313311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11331312232091 - 2⁶ = 11331312232027 is a prime.

It is a super-2 number, since 2×11331312232091² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11331312232081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665656116045 + 5665656116046.

It is an arithmetic number, because the mean of its divisors is an integer number (5665656116046).

Almost surely, 2^{11331312232091} is an apocalyptic number.

11331312232091 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331312232091 is an equidigital number, since it uses as much as digits as its factorization.

11331312232091 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 32.

The spelling of 11331312232091 in words is "eleven trillion, three hundred thirty-one billion, three hundred twelve million, two hundred thirty-two thousand, ninety-one".