12231033320 has 96 divisors (see below), whose sum is σ = 30287786760. Its totient is φ = 4441958400.

The previous prime is 12231033277. The next prime is 12231033341. The reversal of 12231033320 is 2333013221.

It can be written as a sum of positive squares in 4 ways, for example, as 12231032836 + 484 = 110594^2 + 22^2 .

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 = 12231033292 and 12231033301.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6392684 + ... + 6394596.

Almost surely, 2^12231033320 is an apocalyptic number.

12231033320 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 12231033320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15143893380).

12231033320 is an abundant number, since it is smaller than the sum of its proper divisors (18056753440).

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

12231033320 is a wasteful number, since it uses less digits than its factorization.

12231033320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3267 (or 3252 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 12231033320 its reverse (2333013221), we get a palindrome (14564046541).

The spelling of 12231033320 in words is "twelve billion, two hundred thirty-one million, thirty-three thousand, three hundred twenty".