12123316 has 6 divisors (see below), whose sum is σ = 21215810. Its totient is φ = 6061656.

The previous prime is 12123299. The next prime is 12123317. The reversal of 12123316 is 61332121.

It can be written as a sum of positive squares in only one way, i.e., 10692900 + 1430416 = 3270^2 + 1196^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12123293 and 12123302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12123317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1515411 + ... + 1515418.

Almost surely, 2^12123316 is an apocalyptic number.

It is an amenable number.

12123316 is a deficient number, since it is larger than the sum of its proper divisors (9092494).

12123316 is a wasteful number, since it uses less digits than its factorization.

12123316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030833 (or 3030831 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 12123316 is about 3481.8552525916. The cubic root of 12123316 is about 229.7244084117.

Adding to 12123316 its reverse (61332121), we get a palindrome (73455437).

The spelling of 12123316 in words is "twelve million, one hundred twenty-three thousand, three hundred sixteen".