12313130111221 has 2 divisors, whose sum is σ = 12313130111222. Its totient is φ = 12313130111220.

The previous prime is 12313130111141. The next prime is 12313130111237. The reversal of 12313130111221 is 12211103131321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11627322532996 + 685807578225 = 3409886^2 + 828135^2 .

It is a cyclic number.

It is not a de Polignac number, because 12313130111221 - 2¹⁷ = 12313129980149 is a prime.

It is a super-2 number, since 2×12313130111221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12313130111192 and 12313130111201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12313130111281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156565055610 + 6156565055611.

It is an arithmetic number, because the mean of its divisors is an integer number (6156565055611).

Almost surely, 2^{12313130111221} is an apocalyptic number.

It is an amenable number.

12313130111221 is a deficient number, since it is larger than the sum of its proper divisors (1).

12313130111221 is an equidigital number, since it uses as much as digits as its factorization.

12313130111221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 12313130111221 its reverse (12211103131321), we get a palindrome (24524233242542).

The spelling of 12313130111221 in words is "twelve trillion, three hundred thirteen billion, one hundred thirty million, one hundred eleven thousand, two hundred twenty-one".