22312021122 has 12 divisors (see below), whose sum is σ = 48342712470. Its totient is φ = 7437340368.

The previous prime is 22312021097. The next prime is 22312021129. The reversal of 22312021122 is 22112021322.

It can be written as a sum of positive squares in only one way, i.e., 19220772321 + 3091248801 = 138639^2 + 55599^2 .

It is a super-3 number, since 3×22312021122³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1239556729 = 22312021122 / (2 + 2 + 3 + 1 + 2 + 0 + 2 + 1 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 22312021095 and 22312021104.

It is not an unprimeable number, because it can be changed into a prime (22312021129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 619778347 + ... + 619778382.

Almost surely, 2^22312021122 is an apocalyptic number.

22312021122 is an abundant number, since it is smaller than the sum of its proper divisors (26030691348).

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

22312021122 is a wasteful number, since it uses less digits than its factorization.

22312021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239556737 (or 1239556734 counting only the distinct ones).

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

Adding to 22312021122 its reverse (22112021322), we get a palindrome (44424042444).

The spelling of 22312021122 in words is "twenty-two billion, three hundred twelve million, twenty-one thousand, one hundred twenty-two".