22212012012 has 24 divisors (see below), whose sum is σ = 51833724096. Its totient is φ = 7403190288.

The previous prime is 22212012007. The next prime is 22212012061. The reversal of 22212012012 is 21021021222.

It is a junction number, because it is equal to n+sod(n) for n = 22212011982 and 22212012000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17623 + ... + 211505.

It is an arithmetic number, because the mean of its divisors is an integer number (2159738504).

Almost surely, 2^22212012012 is an apocalyptic number.

It is an amenable number.

22212012012 is an abundant number, since it is smaller than the sum of its proper divisors (29621712084).

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

22212012012 is a wasteful number, since it uses less digits than its factorization.

22212012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203437 (or 203435 counting only the distinct ones).

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

Adding to 22212012012 its reverse (21021021222), we get a palindrome (43233033234).

The spelling of 22212012012 in words is "twenty-two billion, two hundred twelve million, twelve thousand, twelve".