12120323320 has 64 divisors (see below), whose sum is σ = 31217503680. Its totient is φ = 4148745216.

The previous prime is 12120323297. The next prime is 12120323333. The reversal of 12120323320 is 2332302121.

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 15 ways as a sum of consecutive naturals, for example, 137682 + ... + 207838.

It is an arithmetic number, because the mean of its divisors is an integer number (487773495).

Almost surely, 2^12120323320 is an apocalyptic number.

12120323320 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 12120323320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15608751840).

12120323320 is an abundant number, since it is smaller than the sum of its proper divisors (19097180360).

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

12120323320 is a wasteful number, since it uses less digits than its factorization.

12120323320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70792 (or 70788 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 12120323320 its reverse (2332302121), we get a palindrome (14452625441).

The spelling of 12120323320 in words is "twelve billion, one hundred twenty million, three hundred twenty-three thousand, three hundred twenty".