12212113330121 has 2 divisors, whose sum is σ = 12212113330122. Its totient is φ = 12212113330120.

The previous prime is 12212113330063. The next prime is 12212113330189. The reversal of 12212113330121 is 12103331121221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9660043179721 + 2552070150400 = 3108061^2 + 1597520^2 .

It is an emirp because it is prime and its reverse (12103331121221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12212113330121 - 2¹⁴ = 12212113313737 is a prime.

It is not a weakly prime, because it can be changed into another prime (12212113330621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106056665060 + 6106056665061.

It is an arithmetic number, because the mean of its divisors is an integer number (6106056665061).

Almost surely, 2^{12212113330121} is an apocalyptic number.

It is an amenable number.

12212113330121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212113330121 is an equidigital number, since it uses as much as digits as its factorization.

12212113330121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12212113330121 its reverse (12103331121221), we get a palindrome (24315444451342).

The spelling of 12212113330121 in words is "twelve trillion, two hundred twelve billion, one hundred thirteen million, three hundred thirty thousand, one hundred twenty-one".