122256609 has 8 divisors (see below), whose sum is σ = 163111872. Its totient is φ = 81452880.

The previous prime is 122256601. The next prime is 122256623. The reversal of 122256609 is 906652221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122256609 - 2³ = 122256601 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 122256609.

It is not an unprimeable number, because it can be changed into a prime (122256601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6957 + ... + 17114.

It is an arithmetic number, because the mean of its divisors is an integer number (20388984).

Almost surely, 2^122256609 is an apocalyptic number.

It is an amenable number.

122256609 is a deficient number, since it is larger than the sum of its proper divisors (40855263).

122256609 is a wasteful number, since it uses less digits than its factorization.

122256609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25767.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 122256609 is about 11056.9710590197. The cubic root of 122256609 is about 496.3150544015.

The spelling of 122256609 in words is "one hundred twenty-two million, two hundred fifty-six thousand, six hundred nine".