12203232320 has 56 divisors (see below), whose sum is σ = 29100935448. Its totient is φ = 4874240000.

The previous prime is 12203232299. The next prime is 12203232331. The reversal of 12203232320 is 2323230221.

It can be written as a sum of positive squares in 4 ways, for example, as 4290774016 + 7912458304 = 65504^2 + 88952^2 .

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 = 12203232292 and 12203232301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197120 + ... + 251520.

Almost surely, 2^12203232320 is an apocalyptic number.

12203232320 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 12203232320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14550467724).

12203232320 is an abundant number, since it is smaller than the sum of its proper divisors (16897703128).

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

12203232320 is an equidigital number, since it uses as much as digits as its factorization.

12203232320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55119 (or 55109 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 12203232320 its reverse (2323230221), we get a palindrome (14526462541).

The spelling of 12203232320 in words is "twelve billion, two hundred three million, two hundred thirty-two thousand, three hundred twenty".