12222021112 has 64 divisors (see below), whose sum is σ = 26555904000. Its totient is φ = 5165012736.

The previous prime is 12222021067. The next prime is 12222021137. The reversal of 12222021112 is 21112022221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4993473 + ... + 4995919.

It is an arithmetic number, because the mean of its divisors is an integer number (414936000).

Almost surely, 2^12222021112 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 12222021112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13277952000).

12222021112 is an abundant number, since it is smaller than the sum of its proper divisors (14333882888).

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

12222021112 is a wasteful number, since it uses less digits than its factorization.

12222021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3668 (or 3664 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12222021112 its reverse (21112022221), we get a palindrome (33334043333).

The spelling of 12222021112 in words is "twelve billion, two hundred twenty-two million, twenty-one thousand, one hundred twelve".