12331201121321 has 4 divisors (see below), whose sum is σ = 12331717246212. Its totient is φ = 12330684996432.

The previous prime is 12331201121293. The next prime is 12331201121363. The reversal of 12331201121321 is 12312110213321.

It is a happy number.

12331201121321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11592417895696 + 738783225625 = 3404764^2 + 859525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12331201121321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12331201121621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258026606 + ... + 258074391.

It is an arithmetic number, because the mean of its divisors is an integer number (3082929311553).

Almost surely, 2^{12331201121321} is an apocalyptic number.

It is an amenable number.

12331201121321 is a deficient number, since it is larger than the sum of its proper divisors (516124891).

12331201121321 is an equidigital number, since it uses as much as digits as its factorization.

12331201121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516124890.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12331201121321 its reverse (12312110213321), we get a palindrome (24643311334642).

The spelling of 12331201121321 in words is "twelve trillion, three hundred thirty-one billion, two hundred one million, one hundred twenty-one thousand, three hundred twenty-one".