122306666 has 4 divisors (see below), whose sum is σ = 183460002. Its totient is φ = 61153332.

The previous prime is 122306623. The next prime is 122306689. The reversal of 122306666 is 666603221.

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

It can be written as a sum of positive squares in only one way, i.e., 114041041 + 8265625 = 10679^2 + 2875^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30576665 + ... + 30576668.

Almost surely, 2^122306666 is an apocalyptic number.

122306666 is a deficient number, since it is larger than the sum of its proper divisors (61153336).

122306666 is an equidigital number, since it uses as much as digits as its factorization.

122306666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61153335.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 122306666 is about 11059.2344219661. The cubic root of 122306666 is about 496.3827825811.

Adding to 122306666 its reverse (666603221), we get a palindrome (788909887).

The spelling of 122306666 in words is "one hundred twenty-two million, three hundred six thousand, six hundred sixty-six".