22022112012 has 24 divisors (see below), whose sum is σ = 51609322800. Its totient is φ = 7308647616.

The previous prime is 22022111999. The next prime is 22022112019. The reversal of 22022112012 is 21021122022.

It is a junction number, because it is equal to n+sod(n) for n = 22022111982 and 22022112000.

It is not an unprimeable number, because it can be changed into a prime (22022112019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4004187 + ... + 4009682.

It is an arithmetic number, because the mean of its divisors is an integer number (2150388450).

Almost surely, 2^22022112012 is an apocalyptic number.

It is an amenable number.

22022112012 is an abundant number, since it is smaller than the sum of its proper divisors (29587210788).

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

22022112012 is a wasteful number, since it uses less digits than its factorization.

22022112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8014105 (or 8014103 counting only the distinct ones).

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

Adding to 22022112012 its reverse (21021122022), we get a palindrome (43043234034).

The spelling of 22022112012 in words is "twenty-two billion, twenty-two million, one hundred twelve thousand, twelve".