122908117 has 4 divisors (see below), whose sum is σ = 126229996. Its totient is φ = 119586240.

The previous prime is 122908091. The next prime is 122908127. The reversal of 122908117 is 711809221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 711809221 = 23 ⋅30948227.

It can be written as a sum of positive squares in 2 ways, for example, as 94595076 + 28313041 = 9726^2 + 5321^2 .

It is a cyclic number.

It is not a de Polignac number, because 122908117 - 2⁷ = 122907989 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 (122908127) 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, 1660884 + ... + 1660957.

It is an arithmetic number, because the mean of its divisors is an integer number (31557499).

Almost surely, 2^122908117 is an apocalyptic number.

It is an amenable number.

122908117 is a deficient number, since it is larger than the sum of its proper divisors (3321879).

122908117 is an equidigital number, since it uses as much as digits as its factorization.

122908117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3321878.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 122908117 is about 11086.3933269571. The cubic root of 122908117 is about 497.1951173561.

The spelling of 122908117 in words is "one hundred twenty-two million, nine hundred eight thousand, one hundred seventeen".