22212201212 has 12 divisors (see below), whose sum is σ = 38874380496. Its totient is φ = 11105235360.

The previous prime is 22212201191. The next prime is 22212201227. The reversal of 22212201212 is 21210221222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156728 + ... + 262655.

It is an arithmetic number, because the mean of its divisors is an integer number (3239531708).

Almost surely, 2^22212201212 is an apocalyptic number.

It is an amenable number.

22212201212 is a deficient number, since it is larger than the sum of its proper divisors (16662179284).

22212201212 is a wasteful number, since it uses less digits than its factorization.

22212201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432628 (or 432626 counting only the distinct ones).

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

Adding to 22212201212 its reverse (21210221222), we get a palindrome (43422422434).

The spelling of 22212201212 in words is "twenty-two billion, two hundred twelve million, two hundred one thousand, two hundred twelve".