22222222424444 has 36 divisors (see below), whose sum is σ = 45278165273040. Its totient is φ = 9515373900480.

The previous prime is 22222222424419. The next prime is 22222222424489. The reversal of 22222222424444 is 44442422222222.

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

It is a junction number, because it is equal to n+sod(n) for n = 22222222424398 and 22222222424407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49990712 + ... + 50433279.

It is an arithmetic number, because the mean of its divisors is an integer number (1257726813140).

Almost surely, 2^{22222222424444} is an apocalyptic number.

It is an amenable number.

22222222424444 is an abundant number, since it is smaller than the sum of its proper divisors (23055942848596).

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

22222222424444 is a wasteful number, since it uses less digits than its factorization.

22222222424444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100425138 (or 100425129 counting only the distinct ones).

The product of its digits is 524288, while the sum is 38.

Adding to 22222222424444 its reverse (44442422222222), we get a palindrome (66664644646666).

The spelling of 22222222424444 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred twenty-two million, four hundred twenty-four thousand, four hundred forty-four".