121321339 has 2 divisors, whose sum is σ = 121321340. Its totient is φ = 121321338.

The previous prime is 121321307. The next prime is 121321351. The reversal of 121321339 is 933123121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121321339 - 2⁵ = 121321307 is a prime.

It is not a weakly prime, because it can be changed into another prime (121321379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60660669 + 60660670.

It is an arithmetic number, because the mean of its divisors is an integer number (60660670).

Almost surely, 2^121321339 is an apocalyptic number.

121321339 is a deficient number, since it is larger than the sum of its proper divisors (1).

121321339 is an equidigital number, since it uses as much as digits as its factorization.

121321339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 25.

The square root of 121321339 is about 11014.5966335586. The cubic root of 121321339 is about 495.0462004968.

The spelling of 121321339 in words is "one hundred twenty-one million, three hundred twenty-one thousand, three hundred thirty-nine".