12213210002321 has 4 divisors (see below), whose sum is σ = 12220857599412. Its totient is φ = 12205562405232.

The previous prime is 12213210002317. The next prime is 12213210002333. The reversal of 12213210002321 is 12320001231221.

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 7150997998225 + 5062212004096 = 2674135^2 + 2249936^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213210002321 - 2² = 12213210002317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12213210002293 and 12213210002302.

It is not an unprimeable number, because it can be changed into a prime (12213210002921) 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, 3823796150 + ... + 3823799343.

It is an arithmetic number, because the mean of its divisors is an integer number (3055214399853).

Almost surely, 2^{12213210002321} is an apocalyptic number.

It is an amenable number.

12213210002321 is a deficient number, since it is larger than the sum of its proper divisors (7647597091).

12213210002321 is an equidigital number, since it uses as much as digits as its factorization.

12213210002321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7647597090.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12213210002321 its reverse (12320001231221), we get a palindrome (24533211233542).

The spelling of 12213210002321 in words is "twelve trillion, two hundred thirteen billion, two hundred ten million, two thousand, three hundred twenty-one".