121344112321 has 2 divisors, whose sum is σ = 121344112322. Its totient is φ = 121344112320.

The previous prime is 121344112319. The next prime is 121344112387. The reversal of 121344112321 is 123211443121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96945672321 + 24398440000 = 311361^2 + 156200^2 .

It is a cyclic number.

It is not a de Polignac number, because 121344112321 - 2¹ = 121344112319 is a prime.

Together with 121344112319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (121344112621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60672056160 + 60672056161.

It is an arithmetic number, because the mean of its divisors is an integer number (60672056161).

Almost surely, 2^121344112321 is an apocalyptic number.

It is an amenable number.

121344112321 is a deficient number, since it is larger than the sum of its proper divisors (1).

121344112321 is an equidigital number, since it uses as much as digits as its factorization.

121344112321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 25.

Adding to 121344112321 its reverse (123211443121), we get a palindrome (244555555442).

The spelling of 121344112321 in words is "one hundred twenty-one billion, three hundred forty-four million, one hundred twelve thousand, three hundred twenty-one".