12321002321 has 8 divisors (see below), whose sum is σ = 12751271400. Its totient is φ = 11891093760.

The previous prime is 12321002303. The next prime is 12321002341. The reversal of 12321002321 is 12320012321.

It can be written as a sum of positive squares in 4 ways, for example, as 1092633025 + 11228369296 = 33055^2 + 105964^2 .

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 12321002321 - 2¹⁸ = 12320740177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12321002321.

It is not an unprimeable number, because it can be changed into a prime (12321002341) 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, 19640 + ... + 158201.

It is an arithmetic number, because the mean of its divisors is an integer number (1593908925).

Almost surely, 2^12321002321 is an apocalyptic number.

It is an amenable number.

12321002321 is a deficient number, since it is larger than the sum of its proper divisors (430269079).

12321002321 is a wasteful number, since it uses less digits than its factorization.

12321002321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180259.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12321002321 its reverse (12320012321), we get a palindrome (24641014642).

The spelling of 12321002321 in words is "twelve billion, three hundred twenty-one million, two thousand, three hundred twenty-one".