22112022012 has 12 divisors (see below), whose sum is σ = 51594718056. Its totient is φ = 7370674000.

The previous prime is 22112022007. The next prime is 22112022013. The reversal of 22112022012 is 21022021122.

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

It is a junction number, because it is equal to n+sod(n) for n = 22112021982 and 22112022000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112022013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921334239 + ... + 921334262.

It is an arithmetic number, because the mean of its divisors is an integer number (4299559838).

Almost surely, 2^22112022012 is an apocalyptic number.

It is an amenable number.

22112022012 is an abundant number, since it is smaller than the sum of its proper divisors (29482696044).

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

22112022012 is a wasteful number, since it uses less digits than its factorization.

22112022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842668508 (or 1842668506 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 22112022012 its reverse (21022021122), we get a palindrome (43134043134).

The spelling of 22112022012 in words is "twenty-two billion, one hundred twelve million, twenty-two thousand, twelve".