22012122112212 has 96 divisors (see below), whose sum is σ = 54247960166400. Its totient is φ = 6927662851200.

The previous prime is 22012122112171. The next prime is 22012122112271. The reversal of 22012122112212 is 21221122121022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 475698637 + ... + 475744907.

It is an arithmetic number, because the mean of its divisors is an integer number (565082918400).

Almost surely, 2^{22012122112212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22012122112212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27123980083200).

22012122112212 is an abundant number, since it is smaller than the sum of its proper divisors (32235838054188).

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

22012122112212 is a wasteful number, since it uses less digits than its factorization.

22012122112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53317 (or 53315 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22012122112212 its reverse (21221122121022), we get a palindrome (43233244233234).

The spelling of 22012122112212 in words is "twenty-two trillion, twelve billion, one hundred twenty-two million, one hundred twelve thousand, two hundred twelve".