22205204440 has 16 divisors (see below), whose sum is σ = 49961710080. Its totient is φ = 8882081760.

The previous prime is 22205204407. The next prime is 22205204443. The reversal of 22205204440 is 4440250222.

It is a super-2 number, since 2×22205204440² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22205204443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277565016 + ... + 277565095.

It is an arithmetic number, because the mean of its divisors is an integer number (3122606880).

Almost surely, 2^22205204440 is an apocalyptic number.

22205204440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22205204440 is an abundant number, since it is smaller than the sum of its proper divisors (27756505640).

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

22205204440 is a wasteful number, since it uses less digits than its factorization.

22205204440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555130122 (or 555130118 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

Adding to 22205204440 its reverse (4440250222), we get a palindrome (26645454662).

The spelling of 22205204440 in words is "twenty-two billion, two hundred five million, two hundred four thousand, four hundred forty".