22120212112 has 20 divisors (see below), whose sum is σ = 42907946796. Its totient is φ = 11047193600.

The previous prime is 22120212043. The next prime is 22120212113. The reversal of 22120212112 is 21121202122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14480752896 + 7639459216 = 120336^2 + 87404^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (22120212113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 792889 + ... + 820312.

Almost surely, 2^22120212112 is an apocalyptic number.

It is an amenable number.

22120212112 is a deficient number, since it is larger than the sum of its proper divisors (20787734684).

22120212112 is a wasteful number, since it uses less digits than its factorization.

22120212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614066 (or 1614060 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22120212112 its reverse (21121202122), we get a palindrome (43241414234).

The spelling of 22120212112 in words is "twenty-two billion, one hundred twenty million, two hundred twelve thousand, one hundred twelve".