121312320333331 has 2 divisors, whose sum is σ = 121312320333332. Its totient is φ = 121312320333330.

The previous prime is 121312320333277. The next prime is 121312320333343. The reversal of 121312320333331 is 133333023213121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121312320333331 is a prime.

It is a super-2 number, since 2×121312320333331² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121312320333293 and 121312320333302.

It is not a weakly prime, because it can be changed into another prime (121312320333371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60656160166665 + 60656160166666.

It is an arithmetic number, because the mean of its divisors is an integer number (60656160166666).

Almost surely, 2^{121312320333331} is an apocalyptic number.

121312320333331 is a deficient number, since it is larger than the sum of its proper divisors (1).

121312320333331 is an equidigital number, since it uses as much as digits as its factorization.

121312320333331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 31.

Adding to 121312320333331 its reverse (133333023213121), we get a palindrome (254645343546452).

The spelling of 121312320333331 in words is "one hundred twenty-one trillion, three hundred twelve billion, three hundred twenty million, three hundred thirty-three thousand, three hundred thirty-one".