12212123113 has 2 divisors, whose sum is σ = 12212123114. Its totient is φ = 12212123112.

The previous prime is 12212123087. The next prime is 12212123141. The reversal of 12212123113 is 31132121221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8359810624 + 3852312489 = 91432^2 + 62067^2 .

It is an emirp because it is prime and its reverse (31132121221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12212123113 - 2⁵ = 12212123081 is a prime.

It is not a weakly prime, because it can be changed into another prime (12212123813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106061556 + 6106061557.

It is an arithmetic number, because the mean of its divisors is an integer number (6106061557).

Almost surely, 2^12212123113 is an apocalyptic number.

It is an amenable number.

12212123113 is a deficient number, since it is larger than the sum of its proper divisors (1).

12212123113 is an equidigital number, since it uses as much as digits as its factorization.

12212123113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 19.

Adding to 12212123113 its reverse (31132121221), we get a palindrome (43344244334).

The spelling of 12212123113 in words is "twelve billion, two hundred twelve million, one hundred twenty-three thousand, one hundred thirteen".