22112101212 has 24 divisors (see below), whose sum is σ = 54629897616. Its totient is φ = 6937129728.

The previous prime is 22112101211. The next prime is 22112101223. The reversal of 22112101212 is 21210121122.

It is a junction number, because it is equal to n+sod(n) for n = 22112101191 and 22112101200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112101211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54196123 + ... + 54196530.

It is an arithmetic number, because the mean of its divisors is an integer number (2276245734).

Almost surely, 2^22112101212 is an apocalyptic number.

It is an amenable number.

22112101212 is an abundant number, since it is smaller than the sum of its proper divisors (32517796404).

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

22112101212 is a wasteful number, since it uses less digits than its factorization.

22112101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108392677 (or 108392675 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22112101212 its reverse (21210121122), we get a palindrome (43322222334).

The spelling of 22112101212 in words is "twenty-two billion, one hundred twelve million, one hundred one thousand, two hundred twelve".