13122004224 has 72 divisors (see below), whose sum is σ = 39912779200. Its totient is φ = 3749142528.

The previous prime is 13122004199. The next prime is 13122004237. The reversal of 13122004224 is 42240022131.

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

It is a self number, because there is not a number n which added to its sum of digits gives 13122004224.

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, 1215049 + ... + 1225800.

Almost surely, 2^13122004224 is an apocalyptic number.

13122004224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13122004224 is an abundant number, since it is smaller than the sum of its proper divisors (26790774976).

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

13122004224 is an equidigital number, since it uses as much as digits as its factorization.

13122004224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440875 (or 2440861 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 13122004224 its reverse (42240022131), we get a palindrome (55362026355).

The spelling of 13122004224 in words is "thirteen billion, one hundred twenty-two million, four thousand, two hundred twenty-four".