131201001210091 has 4 divisors (see below), whose sum is σ = 131481945538632. Its totient is φ = 130920056881552.

The previous prime is 131201001210029. The next prime is 131201001210107. The reversal of 131201001210091 is 190012100102131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131201001210091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131201001270091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140472163570 + ... + 140472164503.

It is an arithmetic number, because the mean of its divisors is an integer number (32870486384658).

Almost surely, 2^{131201001210091} is an apocalyptic number.

131201001210091 is a deficient number, since it is larger than the sum of its proper divisors (280944328541).

131201001210091 is an equidigital number, since it uses as much as digits as its factorization.

131201001210091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280944328540.

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

The spelling of 131201001210091 in words is "one hundred thirty-one trillion, two hundred one billion, one million, two hundred ten thousand, ninety-one".