121310332321 has 2 divisors, whose sum is σ = 121310332322. Its totient is φ = 121310332320.

The previous prime is 121310332271. The next prime is 121310332343. The reversal of 121310332321 is 123233013121.

It is an a-pointer prime, because the next prime (121310332343) can be obtained adding 121310332321 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109766978721 + 11543353600 = 331311^2 + 107440^2 .

It is a cyclic number.

It is not a de Polignac number, because 121310332321 - 2⁹ = 121310331809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121310332292 and 121310332301.

It is not a weakly prime, because it can be changed into another prime (121310332721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60655166160 + 60655166161.

It is an arithmetic number, because the mean of its divisors is an integer number (60655166161).

Almost surely, 2^121310332321 is an apocalyptic number.

It is an amenable number.

121310332321 is a deficient number, since it is larger than the sum of its proper divisors (1).

121310332321 is an equidigital number, since it uses as much as digits as its factorization.

121310332321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 121310332321 its reverse (123233013121), we get a palindrome (244543345442).

The spelling of 121310332321 in words is "one hundred twenty-one billion, three hundred ten million, three hundred thirty-two thousand, three hundred twenty-one".