22004220440 has 64 divisors (see below), whose sum is σ = 50017836960. Its totient is φ = 8711470080.

The previous prime is 22004220439. The next prime is 22004220443. The reversal of 22004220440 is 4402240022.

It is a super-2 number, since 2×22004220440² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22004220443) 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, 7450004 + ... + 7452956.

Almost surely, 2^22004220440 is an apocalyptic number.

22004220440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22004220440 is an abundant number, since it is smaller than the sum of its proper divisors (28013616520).

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

22004220440 is a wasteful number, since it uses less digits than its factorization.

22004220440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4812 (or 4808 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 22004220440 its reverse (4402240022), we get a palindrome (26406460462).

The spelling of 22004220440 in words is "twenty-two billion, four million, two hundred twenty thousand, four hundred forty".