12321331321021 has 8 divisors (see below), whose sum is σ = 12986095762080. Its totient is φ = 11658194211888.

The previous prime is 12321331321003. The next prime is 12321331321037. The reversal of 12321331321021 is 12012313312321.

12321331321021 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 a de Polignac number, because none of the positive numbers 2^k-12321331321021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321331327021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406817431 + ... + 406847716.

It is an arithmetic number, because the mean of its divisors is an integer number (1623261970260).

Almost surely, 2^{12321331321021} is an apocalyptic number.

It is an amenable number.

12321331321021 is a deficient number, since it is larger than the sum of its proper divisors (664764441059).

12321331321021 is an equidigital number, since it uses as much as digits as its factorization.

12321331321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813665963.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 12321331321021 its reverse (12012313312321), we get a palindrome (24333644633342).

The spelling of 12321331321021 in words is "twelve trillion, three hundred twenty-one billion, three hundred thirty-one million, three hundred twenty-one thousand, twenty-one".