91012022200001 has 64 divisors (see below), whose sum is σ = 115470402846720. Its totient is φ = 69985282106880.

The previous prime is 91012022199941. The next prime is 91012022200027. The reversal of 91012022200001 is 10000222021019.

It is a happy number.

It is not a de Polignac number, because 91012022200001 - 2⁶ = 91012022199937 is a prime.

It is a super-4 number, since 4×91012022200001⁴ (a number of 57 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91012022200031) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 37033835 + ... + 39414831.

It is an arithmetic number, because the mean of its divisors is an integer number (1804225044480).

Almost surely, 2^{91012022200001} is an apocalyptic number.

It is an amenable number.

91012022200001 is a deficient number, since it is larger than the sum of its proper divisors (24458380646719).

91012022200001 is a wasteful number, since it uses less digits than its factorization.

91012022200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2381254.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 91012022200001 in words is "ninety-one trillion, twelve billion, twenty-two million, two hundred thousand, one".