22200440444 has 24 divisors (see below), whose sum is σ = 47816334048. Its totient is φ = 8782591680.

The previous prime is 22200440429. The next prime is 22200440473. The reversal of 22200440444 is 44404400222.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30494747 + ... + 30495474.

It is an arithmetic number, because the mean of its divisors is an integer number (1992347252).

Almost surely, 2^22200440444 is an apocalyptic number.

It is an amenable number.

22200440444 is an abundant number, since it is smaller than the sum of its proper divisors (25615893604).

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

22200440444 is a wasteful number, since it uses less digits than its factorization.

22200440444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60990245 (or 60990243 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 22200440444 its reverse (44404400222), we get a palindrome (66604840666).

The spelling of 22200440444 in words is "twenty-two billion, two hundred million, four hundred forty thousand, four hundred forty-four".