91202212213 has 48 divisors (see below), whose sum is σ = 110745947520. Its totient is φ = 74839766400.

The previous prime is 91202212181. The next prime is 91202212219. The reversal of 91202212213 is 31221220219.

It is not a de Polignac number, because 91202212213 - 2⁵ = 91202212181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91202212219) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18161643 + ... + 18166663.

It is an arithmetic number, because the mean of its divisors is an integer number (2307207240).

Almost surely, 2^91202212213 is an apocalyptic number.

It is an amenable number.

91202212213 is a deficient number, since it is larger than the sum of its proper divisors (19543735307).

91202212213 is a wasteful number, since it uses less digits than its factorization.

91202212213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5258 (or 5251 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 91202212213 in words is "ninety-one billion, two hundred two million, two hundred twelve thousand, two hundred thirteen".