91122112122 has 64 divisors (see below), whose sum is σ = 193457894400. Its totient is φ = 28532615040.

The previous prime is 91122112117. The next prime is 91122112127. The reversal of 91122112122 is 22121122119.

It is an interprime number because it is at equal distance from previous prime (91122112117) and next prime (91122112127).

It is a junction number, because it is equal to n+sod(n) for n = 91122112092 and 91122112101.

It is not an unprimeable number, because it can be changed into a prime (91122112127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16099329 + ... + 16104987.

It is an arithmetic number, because the mean of its divisors is an integer number (3022779600).

Almost surely, 2^91122112122 is an apocalyptic number.

91122112122 is an abundant number, since it is smaller than the sum of its proper divisors (102335782278).

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

91122112122 is a wasteful number, since it uses less digits than its factorization.

91122112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6851.

The product of its digits is 288, while the sum is 24.

The spelling of 91122112122 in words is "ninety-one billion, one hundred twenty-two million, one hundred twelve thousand, one hundred twenty-two".