22244401988 has 6 divisors (see below), whose sum is σ = 38927703486. Its totient is φ = 11122200992.

The previous prime is 22244401979. The next prime is 22244402009. The reversal of 22244401988 is 88910444222.

It can be written as a sum of positive squares in only one way, i.e., 12084165184 + 10160236804 = 109928^2 + 100798^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2780550245 + ... + 2780550252.

It is an arithmetic number, because the mean of its divisors is an integer number (6487950581).

Almost surely, 2^22244401988 is an apocalyptic number.

It is an amenable number.

22244401988 is a deficient number, since it is larger than the sum of its proper divisors (16683301498).

22244401988 is a wasteful number, since it uses less digits than its factorization.

22244401988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5561100501 (or 5561100499 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 44.

The spelling of 22244401988 in words is "twenty-two billion, two hundred forty-four million, four hundred one thousand, nine hundred eighty-eight".