22212021112 has 8 divisors (see below), whose sum is σ = 41647539600. Its totient is φ = 11106010552.

The previous prime is 22212021089. The next prime is 22212021113. The reversal of 22212021112 is 21112021222.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212021113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1388251312 + ... + 1388251327.

It is an arithmetic number, because the mean of its divisors is an integer number (5205942450).

Almost surely, 2^22212021112 is an apocalyptic number.

It is an amenable number.

22212021112 is a deficient number, since it is larger than the sum of its proper divisors (19435518488).

22212021112 is a wasteful number, since it uses less digits than its factorization.

22212021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776502645 (or 2776502641 counting only the distinct ones).

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

Adding to 22212021112 its reverse (21112021222), we get a palindrome (43324042334).

The spelling of 22212021112 in words is "twenty-two billion, two hundred twelve million, twenty-one thousand, one hundred twelve".