122015939 has 2 divisors, whose sum is σ = 122015940. Its totient is φ = 122015938.

The previous prime is 122015917. The next prime is 122015941. The reversal of 122015939 is 939510221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122015939 - 2²⁴ = 105238723 is a prime.

Together with 122015941, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122015909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61007969 + 61007970.

It is an arithmetic number, because the mean of its divisors is an integer number (61007970).

Almost surely, 2^122015939 is an apocalyptic number.

122015939 is a deficient number, since it is larger than the sum of its proper divisors (1).

122015939 is an equidigital number, since it uses as much as digits as its factorization.

122015939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 122015939 is about 11046.0825182505. The cubic root of 122015939 is about 495.9891644247.

The spelling of 122015939 in words is "one hundred twenty-two million, fifteen thousand, nine hundred thirty-nine".