22240220440 has 64 divisors (see below), whose sum is σ = 50444856000. Its totient is φ = 8824478208.

The previous prime is 22240220419. The next prime is 22240220473. The reversal of 22240220440 is 4402204222.

It is a happy number.

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, 2746077 + ... + 2754163.

It is an arithmetic number, because the mean of its divisors is an integer number (788200875).

Almost surely, 2^22240220440 is an apocalyptic number.

22240220440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22240220440 is an abundant number, since it is smaller than the sum of its proper divisors (28204635560).

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

22240220440 is a wasteful number, since it uses less digits than its factorization.

22240220440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8644 (or 8640 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 22240220440 its reverse (4402204222), we get a palindrome (26642424662).

The spelling of 22240220440 in words is "twenty-two billion, two hundred forty million, two hundred twenty thousand, four hundred forty".