22212212012 has 6 divisors (see below), whose sum is σ = 38871371028. Its totient is φ = 11106106004.

The previous prime is 22212211999. The next prime is 22212212041. The reversal of 22212212012 is 21021221222.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2776526498 + ... + 2776526505.

It is an arithmetic number, because the mean of its divisors is an integer number (6478561838).

Almost surely, 2^22212212012 is an apocalyptic number.

It is an amenable number.

22212212012 is a deficient number, since it is larger than the sum of its proper divisors (16659159016).

22212212012 is a wasteful number, since it uses less digits than its factorization.

22212212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5553053007 (or 5553053005 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22212212012 its reverse (21021221222), we get a palindrome (43233433234).

The spelling of 22212212012 in words is "twenty-two billion, two hundred twelve million, two hundred twelve thousand, twelve".