12223232320 has 56 divisors (see below), whose sum is σ = 31345549704. Its totient is φ = 4513191936.

The previous prime is 12223232317. The next prime is 12223232369. The reversal of 12223232320 is 2323232221.

It can be written as a sum of positive squares in 4 ways, for example, as 664402176 + 11558830144 = 25776^2 + 107512^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12223232291 and 12223232300.

It is a congruent number.

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, 1464979 + ... + 1473298.

It is an arithmetic number, because the mean of its divisors is an integer number (559741959).

Almost surely, 2^12223232320 is an apocalyptic number.

12223232320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12223232320 is an abundant number, since it is smaller than the sum of its proper divisors (19122317384).

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

12223232320 is a wasteful number, since it uses less digits than its factorization.

12223232320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2938307 (or 2938297 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 12223232320 its reverse (2323232221), we get a palindrome (14546464541).

Subtracting from 12223232320 its reverse (2323232221), we obtain a palindrome (9900000099).

The spelling of 12223232320 in words is "twelve billion, two hundred twenty-three million, two hundred thirty-two thousand, three hundred twenty".