12210002213221 has 2 divisors, whose sum is σ = 12210002213222. Its totient is φ = 12210002213220.

The previous prime is 12210002213209. The next prime is 12210002213231. The reversal of 12210002213221 is 12231220001221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9548409002500 + 2661593210721 = 3090050^2 + 1631439^2 .

It is a cyclic number.

It is not a de Polignac number, because 12210002213221 - 2¹³ = 12210002205029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12210002213231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105001106610 + 6105001106611.

It is an arithmetic number, because the mean of its divisors is an integer number (6105001106611).

Almost surely, 2^{12210002213221} is an apocalyptic number.

It is an amenable number.

12210002213221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210002213221 is an equidigital number, since it uses as much as digits as its factorization.

12210002213221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 12210002213221 its reverse (12231220001221), we get a palindrome (24441222214442).

The spelling of 12210002213221 in words is "twelve trillion, two hundred ten billion, two million, two hundred thirteen thousand, two hundred twenty-one".