122122109 has 4 divisors (see below), whose sum is σ = 122161116. Its totient is φ = 122083104.

The previous prime is 122122097. The next prime is 122122129. The reversal of 122122109 is 901221221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29539225 + 92582884 = 5435^2 + 9622^2 .

It is a cyclic number.

It is not a de Polignac number, because 122122109 - 2¹² = 122118013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122122129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14354 + ... + 21219.

It is an arithmetic number, because the mean of its divisors is an integer number (30540279).

Almost surely, 2^122122109 is an apocalyptic number.

It is an amenable number.

122122109 is a deficient number, since it is larger than the sum of its proper divisors (39007).

122122109 is an equidigital number, since it uses as much as digits as its factorization.

122122109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39006.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 122122109 is about 11050.8872494474. The cubic root of 122122109 is about 496.1329814372.

The spelling of 122122109 in words is "one hundred twenty-two million, one hundred twenty-two thousand, one hundred nine".