22212112044 has 12 divisors (see below), whose sum is σ = 51828261464. Its totient is φ = 7404037344.

The previous prime is 22212112007. The next prime is 22212112057. The reversal of 22212112044 is 44021121222.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 22212112044.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925504657 + ... + 925504680.

Almost surely, 2^22212112044 is an apocalyptic number.

It is an amenable number.

22212112044 is an abundant number, since it is smaller than the sum of its proper divisors (29616149420).

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

22212112044 is a wasteful number, since it uses less digits than its factorization.

22212112044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851009344 (or 1851009342 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22212112044 its reverse (44021121222), we get a palindrome (66233233266).

The spelling of 22212112044 in words is "twenty-two billion, two hundred twelve million, one hundred twelve thousand, forty-four".