91000012222113 has 4 divisors (see below), whose sum is σ = 121333349629488. Its totient is φ = 60666674814740.

The previous prime is 91000012222079. The next prime is 91000012222127. The reversal of 91000012222113 is 31122221000019.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91000012222113 - 2¹⁰ = 91000012221089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91000012222313) 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, 15166668703683 + ... + 15166668703688.

It is an arithmetic number, because the mean of its divisors is an integer number (30333337407372).

Almost surely, 2^{91000012222113} is an apocalyptic number.

It is an amenable number.

91000012222113 is a deficient number, since it is larger than the sum of its proper divisors (30333337407375).

91000012222113 is a wasteful number, since it uses less digits than its factorization.

91000012222113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30333337407374.

The product of its (nonzero) digits is 432, while the sum is 24.

The spelling of 91000012222113 in words is "ninety-one trillion, twelve million, two hundred twenty-two thousand, one hundred thirteen".