122666317 has 4 divisors (see below), whose sum is σ = 126896220. Its totient is φ = 118436416.

The previous prime is 122666309. The next prime is 122666329. The reversal of 122666317 is 713666221.

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 78960996 + 43705321 = 8886^2 + 6611^2 .

It is a cyclic number.

It is not a de Polignac number, because 122666317 - 2³ = 122666309 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 (122666377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2114908 + ... + 2114965.

It is an arithmetic number, because the mean of its divisors is an integer number (31724055).

Almost surely, 2^122666317 is an apocalyptic number.

It is an amenable number.

122666317 is a deficient number, since it is larger than the sum of its proper divisors (4229903).

122666317 is an equidigital number, since it uses as much as digits as its factorization.

122666317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4229902.

The product of its digits is 18144, while the sum is 34.

The square root of 122666317 is about 11075.4826982845. The cubic root of 122666317 is about 496.8688554651.

The spelling of 122666317 in words is "one hundred twenty-two million, six hundred sixty-six thousand, three hundred seventeen".