121511339 has 2 divisors, whose sum is σ = 121511340. Its totient is φ = 121511338.

The previous prime is 121511333. The next prime is 121511353. The reversal of 121511339 is 933115121.

It is a weak prime.

It is an emirp because it is prime and its reverse (933115121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121511339 - 2⁸ = 121511083 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121511333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60755669 + 60755670.

It is an arithmetic number, because the mean of its divisors is an integer number (60755670).

Almost surely, 2^121511339 is an apocalyptic number.

121511339 is a deficient number, since it is larger than the sum of its proper divisors (1).

121511339 is an equidigital number, since it uses as much as digits as its factorization.

121511339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 810, while the sum is 26.

The square root of 121511339 is about 11023.2181780095. The cubic root of 121511339 is about 495.3044944899.

The spelling of 121511339 in words is "one hundred twenty-one million, five hundred eleven thousand, three hundred thirty-nine".