122229509 has 2 divisors, whose sum is σ = 122229510. Its totient is φ = 122229508.

The previous prime is 122229467. The next prime is 122229529. The reversal of 122229509 is 905922221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90307009 + 31922500 = 9503^2 + 5650^2 .

It is an emirp because it is prime and its reverse (905922221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122229509 - 2⁸ = 122229253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122229529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61114754 + 61114755.

It is an arithmetic number, because the mean of its divisors is an integer number (61114755).

Almost surely, 2^122229509 is an apocalyptic number.

It is an amenable number.

122229509 is a deficient number, since it is larger than the sum of its proper divisors (1).

122229509 is an equidigital number, since it uses as much as digits as its factorization.

122229509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 122229509 is about 11055.7455198643. The cubic root of 122229509 is about 496.2783798146.

The spelling of 122229509 in words is "one hundred twenty-two million, two hundred twenty-nine thousand, five hundred nine".