22122133212 has 12 divisors (see below), whose sum is σ = 51618310856. Its totient is φ = 7374044400.

The previous prime is 22122133183. The next prime is 22122133223. The reversal of 22122133212 is 21233122122.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921755539 + ... + 921755562.

Almost surely, 2^22122133212 is an apocalyptic number.

It is an amenable number.

22122133212 is an abundant number, since it is smaller than the sum of its proper divisors (29496177644).

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

22122133212 is a wasteful number, since it uses less digits than its factorization.

22122133212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843511108 (or 1843511106 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

Adding to 22122133212 its reverse (21233122122), we get a palindrome (43355255334).

The spelling of 22122133212 in words is "twenty-two billion, one hundred twenty-two million, one hundred thirty-three thousand, two hundred twelve".