122280909 has 4 divisors (see below), whose sum is σ = 163041216. Its totient is φ = 81520604.

The previous prime is 122280889. The next prime is 122280929. The reversal of 122280909 is 909082221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (122280889) and next prime (122280929).

It is a cyclic number.

It is not a de Polignac number, because 122280909 - 2⁵ = 122280877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122280909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122280929) 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 in 3 ways as a sum of consecutive naturals, for example, 20380149 + ... + 20380154.

It is an arithmetic number, because the mean of its divisors is an integer number (40760304).

Almost surely, 2^122280909 is an apocalyptic number.

It is an amenable number.

122280909 is a deficient number, since it is larger than the sum of its proper divisors (40760307).

122280909 is an equidigital number, since it uses as much as digits as its factorization.

122280909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40760306.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 122280909 is about 11058.0698587050. The cubic root of 122280909 is about 496.3479351239.

The spelling of 122280909 in words is "one hundred twenty-two million, two hundred eighty thousand, nine hundred nine".