22212312120 has 192 divisors, whose sum is σ = 74826180000. Its totient is φ = 5709947904.

The previous prime is 22212312049. The next prime is 22212312131. The reversal of 22212312120 is 2121321222.

22212312120 is a `hidden beast` number, since 2 + 221 + 231 + 212 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 22212312093 and 22212312102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1444231 + ... + 1459529.

Almost surely, 2^22212312120 is an apocalyptic number.

22212312120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22212312120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37413090000).

22212312120 is an abundant number, since it is smaller than the sum of its proper divisors (52613867880).

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

22212312120 is a wasteful number, since it uses less digits than its factorization.

22212312120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15462 (or 15455 counting only the distinct ones).

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

Adding to 22212312120 its reverse (2121321222), we get a palindrome (24333633342).

The spelling of 22212312120 in words is "twenty-two billion, two hundred twelve million, three hundred twelve thousand, one hundred twenty".