122104909 has 2 divisors, whose sum is σ = 122104910. Its totient is φ = 122104908.

The previous prime is 122104903. The next prime is 122104933. The reversal of 122104909 is 909401221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107702884 + 14402025 = 10378^2 + 3795^2 .

It is an emirp because it is prime and its reverse (909401221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122104909 - 2⁷ = 122104781 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 (122104903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61052454 + 61052455.

It is an arithmetic number, because the mean of its divisors is an integer number (61052455).

Almost surely, 2^122104909 is an apocalyptic number.

It is an amenable number.

122104909 is a deficient number, since it is larger than the sum of its proper divisors (1).

122104909 is an equidigital number, since it uses as much as digits as its factorization.

122104909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 122104909 is about 11050.1090039872. The cubic root of 122104909 is about 496.1096881176.

The spelling of 122104909 in words is "one hundred twenty-two million, one hundred four thousand, nine hundred nine".