22202222112 has 144 divisors (see below), whose sum is σ = 72575455680. Its totient is φ = 6306725376.

The previous prime is 22202222111. The next prime is 22202222129. The reversal of 22202222112 is 21122220222.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is not an unprimeable number, because it can be changed into a prime (22202222111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 316939 + ... + 380597.

It is an arithmetic number, because the mean of its divisors is an integer number (503996220).

Almost surely, 2^22202222112 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 22202222112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36287727840).

22202222112 is an abundant number, since it is smaller than the sum of its proper divisors (50373233568).

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

22202222112 is a wasteful number, since it uses less digits than its factorization.

22202222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63855 (or 63844 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22202222112 its reverse (21122220222), we get a palindrome (43324442334).

The spelling of 22202222112 in words is "twenty-two billion, two hundred two million, two hundred twenty-two thousand, one hundred twelve".