121216339 has 2 divisors, whose sum is σ = 121216340. Its totient is φ = 121216338.

The previous prime is 121216331. The next prime is 121216349. The reversal of 121216339 is 933612121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121216339 - 2³ = 121216331 is a prime.

It is equal to p_6907006 and since 121216339 and 6907006 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (121216331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60608169 + 60608170.

It is an arithmetic number, because the mean of its divisors is an integer number (60608170).

Almost surely, 2^121216339 is an apocalyptic number.

121216339 is a deficient number, since it is larger than the sum of its proper divisors (1).

121216339 is an equidigital number, since it uses as much as digits as its factorization.

121216339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 28.

The square root of 121216339 is about 11009.8291994018. The cubic root of 121216339 is about 494.9033433694.

The spelling of 121216339 in words is "one hundred twenty-one million, two hundred sixteen thousand, three hundred thirty-nine".