13231201122 has 80 divisors (see below), whose sum is σ = 31181432832. Its totient is φ = 4185276480.

The previous prime is 13231201121. The next prime is 13231201127. The reversal of 13231201122 is 22110213231.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13231201095 and 13231201104.

It is not an unprimeable number, because it can be changed into a prime (13231201121) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 459222 + ... + 487182.

Almost surely, 2^13231201122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13231201122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15590716416).

13231201122 is an abundant number, since it is smaller than the sum of its proper divisors (17950231710).

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

13231201122 is a wasteful number, since it uses less digits than its factorization.

13231201122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28125 (or 28116 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13231201122 its reverse (22110213231), we get a palindrome (35341414353).

The spelling of 13231201122 in words is "thirteen billion, two hundred thirty-one million, two hundred one thousand, one hundred twenty-two".