121341313231 has 2 divisors, whose sum is σ = 121341313232. Its totient is φ = 121341313230.

The previous prime is 121341313229. The next prime is 121341313267. The reversal of 121341313231 is 132313143121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121341313231 - 2¹ = 121341313229 is a prime.

It is a super-2 number, since 2×121341313231² (a number of 23 digits) contains 22 as substring.

Together with 121341313229, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 121341313196 and 121341313205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121341313201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60670656615 + 60670656616.

It is an arithmetic number, because the mean of its divisors is an integer number (60670656616).

Almost surely, 2^121341313231 is an apocalyptic number.

121341313231 is a deficient number, since it is larger than the sum of its proper divisors (1).

121341313231 is an equidigital number, since it uses as much as digits as its factorization.

121341313231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 25.

Adding to 121341313231 its reverse (132313143121), we get a palindrome (253654456352).

The spelling of 121341313231 in words is "one hundred twenty-one billion, three hundred forty-one million, three hundred thirteen thousand, two hundred thirty-one".