121313220232331 has 2 divisors, whose sum is σ = 121313220232332. Its totient is φ = 121313220232330.

The previous prime is 121313220232313. The next prime is 121313220232459. The reversal of 121313220232331 is 133232022313121.

Together with previous prime (121313220232313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121313220232331 is a prime.

It is a super-2 number, since 2×121313220232331² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121313220232294 and 121313220232303.

It is not a weakly prime, because it can be changed into another prime (121313220262331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60656610116165 + 60656610116166.

It is an arithmetic number, because the mean of its divisors is an integer number (60656610116166).

Almost surely, 2^{121313220232331} is an apocalyptic number.

121313220232331 is a deficient number, since it is larger than the sum of its proper divisors (1).

121313220232331 is an equidigital number, since it uses as much as digits as its factorization.

121313220232331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 121313220232331 its reverse (133232022313121), we get a palindrome (254545242545452).

The spelling of 121313220232331 in words is "one hundred twenty-one trillion, three hundred thirteen billion, two hundred twenty million, two hundred thirty-two thousand, three hundred thirty-one".