22240340220 has 96 divisors (see below), whose sum is σ = 71239504896. Its totient is φ = 5078476800.

The previous prime is 22240340071. The next prime is 22240340257. The reversal of 22240340220 is 2204304222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 407340 + ... + 458700.

It is an arithmetic number, because the mean of its divisors is an integer number (742078176).

Almost surely, 2^22240340220 is an apocalyptic number.

22240340220 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 22240340220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35619752448).

22240340220 is an abundant number, since it is smaller than the sum of its proper divisors (48999164676).

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

22240340220 is a wasteful number, since it uses less digits than its factorization.

22240340220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52411 (or 52409 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 22240340220 its reverse (2204304222), we get a palindrome (24444644442).

The spelling of 22240340220 in words is "twenty-two billion, two hundred forty million, three hundred forty thousand, two hundred twenty".