22222244444 has 48 divisors (see below), whose sum is σ = 39537120000. Its totient is φ = 10928048256.

The previous prime is 22222244419. The next prime is 22222244491. The reversal of 22222244444 is 44444222222.

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 22222244444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44533307 + ... + 44533805.

It is an arithmetic number, because the mean of its divisors is an integer number (823690000).

Almost surely, 2^22222244444 is an apocalyptic number.

It is an amenable number.

22222244444 is a deficient number, since it is larger than the sum of its proper divisors (17314875556).

22222244444 is a wasteful number, since it uses less digits than its factorization.

22222244444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242 (or 1240 counting only the distinct ones).

The product of its digits is 65536, while the sum is 32.

Adding to 22222244444 its reverse (44444222222), we get a palindrome (66666466666).

The spelling of 22222244444 in words is "twenty-two billion, two hundred twenty-two million, two hundred forty-four thousand, four hundred forty-four".