12113221232 has 80 divisors (see below), whose sum is σ = 28210194432. Its totient is φ = 4929050880.

The previous prime is 12113221231. The next prime is 12113221243. The reversal of 12113221232 is 23212231121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12113221231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151103 + ... + 216929.

Almost surely, 2^12113221232 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 12113221232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14105097216).

12113221232 is an abundant number, since it is smaller than the sum of its proper divisors (16096973200).

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

12113221232 is a wasteful number, since it uses less digits than its factorization.

12113221232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65926 (or 65920 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

Adding to 12113221232 its reverse (23212231121), we get a palindrome (35325452353).

The spelling of 12113221232 in words is "twelve billion, one hundred thirteen million, two hundred twenty-one thousand, two hundred thirty-two".