22220202112 has 64 divisors (see below), whose sum is σ = 46300786560. Its totient is φ = 10601902080.

The previous prime is 22220202097. The next prime is 22220202113. The reversal of 22220202112 is 21120202222.

It is a tau number, because it is divible by the number of its divisors (64).

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 (22220202113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1266037 + ... + 1283467.

It is an arithmetic number, because the mean of its divisors is an integer number (723449790).

Almost surely, 2^22220202112 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 22220202112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23150393280).

22220202112 is an abundant number, since it is smaller than the sum of its proper divisors (24080584448).

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

22220202112 is a wasteful number, since it uses less digits than its factorization.

22220202112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17901 (or 17889 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22220202112 its reverse (21120202222), we get a palindrome (43340404334).

The spelling of 22220202112 in words is "twenty-two billion, two hundred twenty million, two hundred two thousand, one hundred twelve".