12113432320 has 144 divisors (see below), whose sum is σ = 31842592992. Its totient is φ = 4378542080.

The previous prime is 12113432293. The next prime is 12113432323. The reversal of 12113432320 is 2323431121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 12113432291 and 12113432300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12113432323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2433354 + ... + 2438326.

It is an arithmetic number, because the mean of its divisors is an integer number (221129118).

Almost surely, 2^12113432320 is an apocalyptic number.

12113432320 is a gapful number since it is divisible by the number (10) 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 12113432320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15921296496).

12113432320 is an abundant number, since it is smaller than the sum of its proper divisors (19729160672).

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

12113432320 is a wasteful number, since it uses less digits than its factorization.

12113432320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5178 (or 5164 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 12113432320 its reverse (2323431121), we get a palindrome (14436863441).

The spelling of 12113432320 in words is "twelve billion, one hundred thirteen million, four hundred thirty-two thousand, three hundred twenty".