22021122112 has 112 divisors (see below), whose sum is σ = 48338110080. Its totient is φ = 9870336000.

The previous prime is 22021122083. The next prime is 22021122119. The reversal of 22021122112 is 21122112022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (22021122119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23961589 + ... + 23962507.

Almost surely, 2^22021122112 is an apocalyptic number.

22021122112 is a gapful number since it is divisible by the number (22) 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 22021122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24169055040).

22021122112 is an abundant number, since it is smaller than the sum of its proper divisors (26316987968).

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

22021122112 is a wasteful number, since it uses less digits than its factorization.

22021122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380 (or 1370 counting only the distinct ones).

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

Adding to 22021122112 its reverse (21122112022), we get a palindrome (43143234134).

The spelling of 22021122112 in words is "twenty-two billion, twenty-one million, one hundred twenty-two thousand, one hundred twelve".