12120331321 has 8 divisors (see below), whose sum is σ = 14454059904. Its totient is φ = 9937165920.

The previous prime is 12120331273. The next prime is 12120331331. The reversal of 12120331321 is 12313302121.

12120331321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12120331321 - 2⁹ = 12120330809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12120331331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37640620 + ... + 37640941.

It is an arithmetic number, because the mean of its divisors is an integer number (1806757488).

Almost surely, 2^12120331321 is an apocalyptic number.

It is an amenable number.

12120331321 is a deficient number, since it is larger than the sum of its proper divisors (2333728583).

12120331321 is an equidigital number, since it uses as much as digits as its factorization.

12120331321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75281591.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12120331321 its reverse (12313302121), we get a palindrome (24433633442).

The spelling of 12120331321 in words is "twelve billion, one hundred twenty million, three hundred thirty-one thousand, three hundred twenty-one".