131011122091 has 2 divisors, whose sum is σ = 131011122092. Its totient is φ = 131011122090.

The previous prime is 131011122029. The next prime is 131011122233. The reversal of 131011122091 is 190221110131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131011122091 - 2¹³ = 131011113899 is a prime.

It is a super-2 number, since 2×131011122091² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131011122691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65505561045 + 65505561046.

It is an arithmetic number, because the mean of its divisors is an integer number (65505561046).

Almost surely, 2^131011122091 is an apocalyptic number.

131011122091 is a deficient number, since it is larger than the sum of its proper divisors (1).

131011122091 is an equidigital number, since it uses as much as digits as its factorization.

131011122091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 22.

The spelling of 131011122091 in words is "one hundred thirty-one billion, eleven million, one hundred twenty-two thousand, ninety-one".