91112020122 has 16 divisors (see below), whose sum is σ = 182446003872. Its totient is φ = 30333679440.

The previous prime is 91112020049. The next prime is 91112020123. The reversal of 91112020122 is 22102021119.

It is not an unprimeable number, because it can be changed into a prime (91112020123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9243148 + ... + 9252999.

It is an arithmetic number, because the mean of its divisors is an integer number (11402875242).

Almost surely, 2^91112020122 is an apocalyptic number.

91112020122 is an abundant number, since it is smaller than the sum of its proper divisors (91333983750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91112020122 is a wasteful number, since it uses less digits than its factorization.

91112020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18496973.

The product of its (nonzero) digits is 144, while the sum is 21.

The spelling of 91112020122 in words is "ninety-one billion, one hundred twelve million, twenty thousand, one hundred twenty-two".