22220220112 has 20 divisors (see below), whose sum is σ = 43092749700. Its totient is φ = 11099510528.

The previous prime is 22220220091. The next prime is 22220220193. The reversal of 22220220112 is 21102202222.

It can be written as a sum of positive squares in 2 ways, for example, as 12965010496 + 9255209616 = 113864^2 + 96204^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645163 + ... + 678730.

It is an arithmetic number, because the mean of its divisors is an integer number (2154637485).

Almost surely, 2^22220220112 is an apocalyptic number.

It is an amenable number.

22220220112 is a deficient number, since it is larger than the sum of its proper divisors (20872529588).

22220220112 is a wasteful number, since it uses less digits than its factorization.

22220220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324950 (or 1324944 counting only the distinct ones).

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

Adding to 22220220112 its reverse (21102202222), we get a palindrome (43322422334).

The spelling of 22220220112 in words is "twenty-two billion, two hundred twenty million, two hundred twenty thousand, one hundred twelve".