90122111121 has 64 divisors (see below), whose sum is σ = 141983428608. Its totient is φ = 49772890368.

The previous prime is 90122111041. The next prime is 90122111161. The reversal of 90122111121 is 12111122109.

It is not a de Polignac number, because 90122111121 - 2⁹ = 90122110609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (90122111161) 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, 114513090 + ... + 114513876.

It is an arithmetic number, because the mean of its divisors is an integer number (2218491072).

Almost surely, 2^90122111121 is an apocalyptic number.

It is an amenable number.

90122111121 is a deficient number, since it is larger than the sum of its proper divisors (51861317487).

90122111121 is a wasteful number, since it uses less digits than its factorization.

90122111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 90122111121 in words is "ninety billion, one hundred twenty-two million, one hundred eleven thousand, one hundred twenty-one".