12123866 has 8 divisors (see below), whose sum is σ = 18295200. Its totient is φ = 6025468.

The previous prime is 12123857. The next prime is 12123877. The reversal of 12123866 is 66832121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17816 + ... + 18483.

It is an arithmetic number, because the mean of its divisors is an integer number (2286900).

Almost surely, 2^12123866 is an apocalyptic number.

12123866 is a deficient number, since it is larger than the sum of its proper divisors (6171334).

12123866 is a wasteful number, since it uses less digits than its factorization.

12123866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36468.

The product of its digits is 3456, while the sum is 29.

The square root of 12123866 is about 3481.9342325782. The cubic root of 12123866 is about 229.7278823378.

Adding to 12123866 its reverse (66832121), we get a palindrome (78955987).

The spelling of 12123866 in words is "twelve million, one hundred twenty-three thousand, eight hundred sixty-six".