22421131344 has 40 divisors (see below), whose sum is σ = 64356952320. Its totient is φ = 7473710304.

The previous prime is 22421131319. The next prime is 22421131417. The reversal of 22421131344 is 44313112422.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25949952 + ... + 25950815.

It is an arithmetic number, because the mean of its divisors is an integer number (1608923808).

Almost surely, 2^22421131344 is an apocalyptic number.

22421131344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22421131344 is an abundant number, since it is smaller than the sum of its proper divisors (41935820976).

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

22421131344 is a wasteful number, since it uses less digits than its factorization.

22421131344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51900784 (or 51900772 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 22421131344 its reverse (44313112422), we get a palindrome (66734243766).

The spelling of 22421131344 in words is "twenty-two billion, four hundred twenty-one million, one hundred thirty-one thousand, three hundred forty-four".