22403121144 has 32 divisors (see below), whose sum is σ = 57199461120. Its totient is φ = 7308819296.

The previous prime is 22403121133. The next prime is 22403121163. The reversal of 22403121144 is 44112130422.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 9929334 + ... + 9931589.

It is an arithmetic number, because the mean of its divisors is an integer number (1787483160).

Almost surely, 2^22403121144 is an apocalyptic number.

22403121144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22403121144 is an abundant number, since it is smaller than the sum of its proper divisors (34796339976).

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

22403121144 is a wasteful number, since it uses less digits than its factorization.

22403121144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19860979 (or 19860975 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 22403121144 its reverse (44112130422), we get a palindrome (66515251566).

The spelling of 22403121144 in words is "twenty-two billion, four hundred three million, one hundred twenty-one thousand, one hundred forty-four".