12012243320 has 256 divisors, whose sum is σ = 35169361920. Its totient is φ = 3583180800.

The previous prime is 12012243317. The next prime is 12012243337. The reversal of 12012243320 is 2334221021.

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 = 12012243292 and 12012243301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9260912 + ... + 9262208.

It is an arithmetic number, because the mean of its divisors is an integer number (137380320).

Almost surely, 2^12012243320 is an apocalyptic number.

12012243320 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 12012243320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17584680960).

12012243320 is an abundant number, since it is smaller than the sum of its proper divisors (23157118600).

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

12012243320 is a wasteful number, since it uses less digits than its factorization.

12012243320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454 (or 1450 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12012243320 its reverse (2334221021), we get a palindrome (14346464341).

The spelling of 12012243320 in words is "twelve billion, twelve million, two hundred forty-three thousand, three hundred twenty".