121313421034321 has 2 divisors, whose sum is σ = 121313421034322. Its totient is φ = 121313421034320.

The previous prime is 121313421034271. The next prime is 121313421034363. The reversal of 121313421034321 is 123430124313121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103038009783696 + 18275411250625 = 10150764^2 + 4274975^2 .

It is a cyclic number.

It is not a de Polignac number, because 121313421034321 - 2³⁹ = 120763665220433 is a prime.

It is a super-2 number, since 2×121313421034321² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121313421031321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60656710517160 + 60656710517161.

It is an arithmetic number, because the mean of its divisors is an integer number (60656710517161).

Almost surely, 2^{121313421034321} is an apocalyptic number.

It is an amenable number.

121313421034321 is a deficient number, since it is larger than the sum of its proper divisors (1).

121313421034321 is an equidigital number, since it uses as much as digits as its factorization.

121313421034321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 121313421034321 its reverse (123430124313121), we get a palindrome (244743545347442).

The spelling of 121313421034321 in words is "one hundred twenty-one trillion, three hundred thirteen billion, four hundred twenty-one million, thirty-four thousand, three hundred twenty-one".