22120212122112 has 320 divisors, whose sum is σ = 65219002966656. Its totient is φ = 6618922352640.

The previous prime is 22120212122011. The next prime is 22120212122117. The reversal of 22120212122112 is 21122121202122.

It is not an unprimeable number, because it can be changed into a prime (22120212122117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256206183 + ... + 256292505.

Almost surely, 2^{22120212122112} 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 22120212122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32609501483328).

22120212122112 is an abundant number, since it is smaller than the sum of its proper divisors (43098790844544).

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

22120212122112 is a wasteful number, since it uses less digits than its factorization.

22120212122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86711 (or 86695 counting only the distinct ones).

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

Adding to 22120212122112 its reverse (21122121202122), we get a palindrome (43242333324234).

The spelling of 22120212122112 in words is "twenty-two trillion, one hundred twenty billion, two hundred twelve million, one hundred twenty-two thousand, one hundred twelve".