13321223124 has 96 divisors (see below), whose sum is σ = 34146717696. Its totient is φ = 4008506880.

The previous prime is 13321223117. The next prime is 13321223143. The reversal of 13321223124 is 42132212331.

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

It is a junction number, because it is equal to n+sod(n) for n = 13321223094 and 13321223103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15435517 + ... + 15436379.

It is an arithmetic number, because the mean of its divisors is an integer number (355694976).

Almost surely, 2^13321223124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13321223124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17073358848).

13321223124 is an abundant number, since it is smaller than the sum of its proper divisors (20825494572).

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

13321223124 is a wasteful number, since it uses less digits than its factorization.

13321223124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565 (or 1563 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

Adding to 13321223124 its reverse (42132212331), we get a palindrome (55453435455).

The spelling of 13321223124 in words is "thirteen billion, three hundred twenty-one million, two hundred twenty-three thousand, one hundred twenty-four".