12321287160 has 256 divisors, whose sum is σ = 46424448000. Its totient is φ = 2599543296.

The previous prime is 12321287119. The next prime is 12321287191. The reversal of 12321287160 is 6178212321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 523567 + ... + 546593.

It is an arithmetic number, because the mean of its divisors is an integer number (181345500).

Almost surely, 2^12321287160 is an apocalyptic number.

12321287160 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 12321287160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23212224000).

12321287160 is an abundant number, since it is smaller than the sum of its proper divisors (34103160840).

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

12321287160 is a wasteful number, since it uses less digits than its factorization.

12321287160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23075 (or 23057 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

Adding to 12321287160 its reverse (6178212321), we get a palindrome (18499499481).

The spelling of 12321287160 in words is "twelve billion, three hundred twenty-one million, two hundred eighty-seven thousand, one hundred sixty".