22204224204440 has 64 divisors (see below), whose sum is σ = 51195337839360. Its totient is φ = 8662583825280.

The previous prime is 22204224204391. The next prime is 22204224204443. The reversal of 22204224204440 is 4440242240222.

It is a junction number, because it is equal to n+sod(n) for n = 22204224204397 and 22204224204406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22204224204443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8152604 + ... + 10529643.

It is an arithmetic number, because the mean of its divisors is an integer number (799927153740).

Almost surely, 2^{22204224204440} is an apocalyptic number.

22204224204440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22204224204440 is an abundant number, since it is smaller than the sum of its proper divisors (28991113634920).

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

22204224204440 is a wasteful number, since it uses less digits than its factorization.

22204224204440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18682992 (or 18682988 counting only the distinct ones).

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

Adding to 22204224204440 its reverse (4440242240222), we get a palindrome (26644466444662).

The spelling of 22204224204440 in words is "twenty-two trillion, two hundred four billion, two hundred twenty-four million, two hundred four thousand, four hundred forty".