22224644420 has 96 divisors (see below), whose sum is σ = 51292725120. Its totient is φ = 8021928960.

The previous prime is 22224644419. The next prime is 22224644473. The reversal of 22224644420 is 2444642222.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26808566 + ... + 26809394.

It is an arithmetic number, because the mean of its divisors is an integer number (534299220).

Almost surely, 2^22224644420 is an apocalyptic number.

22224644420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22224644420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25646362560).

22224644420 is an abundant number, since it is smaller than the sum of its proper divisors (29068080700).

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

22224644420 is a wasteful number, since it uses less digits than its factorization.

22224644420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605 (or 1603 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

It can be divided in two parts, 222 and 24644420, that added together give a palindrome (24644642).

The spelling of 22224644420 in words is "twenty-two billion, two hundred twenty-four million, six hundred forty-four thousand, four hundred twenty".