12321085308 has 96 divisors (see below), whose sum is σ = 34893540864. Its totient is φ = 3303272448.

The previous prime is 12321085307. The next prime is 12321085331. The reversal of 12321085308 is 80358012321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321085307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 468435 + ... + 494037.

It is an arithmetic number, because the mean of its divisors is an integer number (363474384).

Almost surely, 2^12321085308 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12321085308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17446770432).

12321085308 is an abundant number, since it is smaller than the sum of its proper divisors (22572455556).

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

12321085308 is a wasteful number, since it uses less digits than its factorization.

12321085308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25971 (or 25969 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

Adding to 12321085308 its reverse (80358012321), we get a palindrome (92679097629).

The spelling of 12321085308 in words is "twelve billion, three hundred twenty-one million, eighty-five thousand, three hundred eight".