12210002313221 has 2 divisors, whose sum is σ = 12210002313222. Its totient is φ = 12210002313220.

The previous prime is 12210002313211. The next prime is 12210002313227. The reversal of 12210002313221 is 12231320001221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12002663244196 + 207339069025 = 3464486^2 + 455345^2 .

It is an emirp because it is prime and its reverse (12231320001221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12210002313221 - 2¹⁴ = 12210002296837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12210002313193 and 12210002313202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12210002313227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105001156610 + 6105001156611.

It is an arithmetic number, because the mean of its divisors is an integer number (6105001156611).

Almost surely, 2^{12210002313221} is an apocalyptic number.

It is an amenable number.

12210002313221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210002313221 is an equidigital number, since it uses as much as digits as its factorization.

12210002313221 is an evil number, because the sum of its binary digits is even.

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

Adding to 12210002313221 its reverse (12231320001221), we get a palindrome (24441322314442).

The spelling of 12210002313221 in words is "twelve trillion, two hundred ten billion, two million, three hundred thirteen thousand, two hundred twenty-one".