22120312122 has 24 divisors (see below), whose sum is σ = 48304728576. Its totient is φ = 7315378056.

The previous prime is 22120312117. The next prime is 22120312141. The reversal of 22120312122 is 22121302122.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22120312095 and 22120312104.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4835928 + ... + 4840499.

It is an arithmetic number, because the mean of its divisors is an integer number (2012697024).

Almost surely, 2^22120312122 is an apocalyptic number.

22120312122 is an abundant number, since it is smaller than the sum of its proper divisors (26184416454).

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

22120312122 is a wasteful number, since it uses less digits than its factorization.

22120312122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9676562 (or 9676559 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22120312122 its reverse (22121302122), we get a palindrome (44241614244).

The spelling of 22120312122 in words is "twenty-two billion, one hundred twenty million, three hundred twelve thousand, one hundred twenty-two".