122917666 has 16 divisors (see below), whose sum is σ = 190614528. Its totient is φ = 59447460.

The previous prime is 122917661. The next prime is 122917673. The reversal of 122917666 is 666719221.

It is a super-2 number, since 2×122917666² = 30217505229775112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122917661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58551 + ... + 60613.

It is an arithmetic number, because the mean of its divisors is an integer number (11913408).

Almost surely, 2^122917666 is an apocalyptic number.

122917666 is a deficient number, since it is larger than the sum of its proper divisors (67696862).

122917666 is an frugal number, since it uses more digits than its factorization.

122917666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2158 (or 2096 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 122917666 is about 11086.8239816460. The cubic root of 122917666 is about 497.2079930808.

The spelling of 122917666 in words is "one hundred twenty-two million, nine hundred seventeen thousand, six hundred sixty-six".