12111320232 has 112 divisors (see below), whose sum is σ = 37142938080. Its totient is φ = 3670077600.

The previous prime is 12111320227. The next prime is 12111320237. The reversal of 12111320232 is 23202311121.

12111320232 is a `hidden beast` number, since 1 + 2 + 111 + 320 + 232 = 666.

It is an interprime number because it is at equal distance from previous prime (12111320227) and next prime (12111320237).

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

It is not an unprimeable number, because it can be changed into a prime (12111320237) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 30244 + ... + 158547.

Almost surely, 2^12111320232 is an apocalyptic number.

12111320232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12111320232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18571469040).

12111320232 is an abundant number, since it is smaller than the sum of its proper divisors (25031617848).

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

12111320232 is a wasteful number, since it uses less digits than its factorization.

12111320232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188826 (or 188807 counting only the distinct ones).

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

Adding to 12111320232 its reverse (23202311121), we get a palindrome (35313631353).

The spelling of 12111320232 in words is "twelve billion, one hundred eleven million, three hundred twenty thousand, two hundred thirty-two".