22112202221212 has 6 divisors (see below), whose sum is σ = 38696353887128. Its totient is φ = 11056101110604.

The previous prime is 22112202221201. The next prime is 22112202221227. The reversal of 22112202221212 is 21212220221122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2764025277648 + ... + 2764025277655.

Almost surely, 2^{22112202221212} is an apocalyptic number.

It is an amenable number.

22112202221212 is a deficient number, since it is larger than the sum of its proper divisors (16584151665916).

22112202221212 is a wasteful number, since it uses less digits than its factorization.

22112202221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5528050555307 (or 5528050555305 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 22112202221212 its reverse (21212220221122), we get a palindrome (43324422442334).

The spelling of 22112202221212 in words is "twenty-two trillion, one hundred twelve billion, two hundred two million, two hundred twenty-one thousand, two hundred twelve".