22112320212 has 72 divisors (see below), whose sum is σ = 59257615872. Its totient is φ = 6940209600.

The previous prime is 22112320187. The next prime is 22112320231. The reversal of 22112320212 is 21202321122.

22112320212 is a `hidden beast` number, since 22 + 112 + 320 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 226464 + ... + 309047.

Almost surely, 2^22112320212 is an apocalyptic number.

It is an amenable number.

22112320212 is an abundant number, since it is smaller than the sum of its proper divisors (37145295660).

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

22112320212 is a wasteful number, since it uses less digits than its factorization.

22112320212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535589 (or 535584 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22112320212 its reverse (21202321122), we get a palindrome (43314641334).

The spelling of 22112320212 in words is "twenty-two billion, one hundred twelve million, three hundred twenty thousand, two hundred twelve".