122052509 has 2 divisors, whose sum is σ = 122052510. Its totient is φ = 122052508.

The previous prime is 122052499. The next prime is 122052527. The reversal of 122052509 is 905250221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97022500 + 25030009 = 9850^2 + 5003^2 .

It is a cyclic number.

It is not a de Polignac number, because 122052509 - 2⁸ = 122052253 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122052589) 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, 61026254 + 61026255.

It is an arithmetic number, because the mean of its divisors is an integer number (61026255).

Almost surely, 2^122052509 is an apocalyptic number.

It is an amenable number.

122052509 is a deficient number, since it is larger than the sum of its proper divisors (1).

122052509 is an equidigital number, since it uses as much as digits as its factorization.

122052509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 122052509 is about 11047.7377322237. The cubic root of 122052509 is about 496.0387112628.

The spelling of 122052509 in words is "one hundred twenty-two million, fifty-two thousand, five hundred nine".