12012310320 has 160 divisors (see below), whose sum is σ = 38492893440. Its totient is φ = 3097144320.

The previous prime is 12012310301. The next prime is 12012310333. The reversal of 12012310320 is 2301321021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12012310320.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 856807 + ... + 870713.

It is an arithmetic number, because the mean of its divisors is an integer number (240580584).

Almost surely, 2^12012310320 is an apocalyptic number.

12012310320 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 12012310320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19246446720).

12012310320 is an abundant number, since it is smaller than the sum of its proper divisors (26480583120).

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

12012310320 is a wasteful number, since it uses less digits than its factorization.

12012310320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14043 (or 14037 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12012310320 its reverse (2301321021), we get a palindrome (14313631341).

The spelling of 12012310320 in words is "twelve billion, twelve million, three hundred ten thousand, three hundred twenty".