12323113220 has 48 divisors (see below), whose sum is σ = 28312200000. Its totient is φ = 4468264320.

The previous prime is 12323113207. The next prime is 12323113223. The reversal of 12323113220 is 2231132321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12323113192 and 12323113201.

It is not an unprimeable number, because it can be changed into a prime (12323113223) 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, 3470 + ... + 157029.

It is an arithmetic number, because the mean of its divisors is an integer number (589837500).

Almost surely, 2^12323113220 is an apocalyptic number.

12323113220 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 12323113220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14156100000).

12323113220 is an abundant number, since it is smaller than the sum of its proper divisors (15989086780).

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

12323113220 is a wasteful number, since it uses less digits than its factorization.

12323113220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160868 (or 160866 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12323113220 its reverse (2231132321), we get a palindrome (14554245541).

The spelling of 12323113220 in words is "twelve billion, three hundred twenty-three million, one hundred thirteen thousand, two hundred twenty".