12213120322121 has 2 divisors, whose sum is σ = 12213120322122. Its totient is φ = 12213120322120.

The previous prime is 12213120322099. The next prime is 12213120322157. The reversal of 12213120322121 is 12122302131221.

12213120322121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11317000605625 + 896119716496 = 3364075^2 + 946636^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213120322121 - 2³⁴ = 12195940452937 is a prime.

It is not a weakly prime, because it can be changed into another prime (12213120322421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106560161060 + 6106560161061.

It is an arithmetic number, because the mean of its divisors is an integer number (6106560161061).

Almost surely, 2^{12213120322121} is an apocalyptic number.

It is an amenable number.

12213120322121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12213120322121 is an equidigital number, since it uses as much as digits as its factorization.

12213120322121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 12213120322121 its reverse (12122302131221), we get a palindrome (24335422453342).

The spelling of 12213120322121 in words is "twelve trillion, two hundred thirteen billion, one hundred twenty million, three hundred twenty-two thousand, one hundred twenty-one".