12111716 has 12 divisors (see below), whose sum is σ = 21220332. Its totient is φ = 6048768.

The previous prime is 12111713. The next prime is 12111751. The reversal of 12111716 is 61711121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3724900 + 8386816 = 1930^2 + 2896^2 .

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111713) 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 3 ways as a sum of consecutive naturals, for example, 4676 + ... + 6788.

It is an arithmetic number, because the mean of its divisors is an integer number (1768361).

Almost surely, 2^12111716 is an apocalyptic number.

It is an amenable number.

12111716 is a deficient number, since it is larger than the sum of its proper divisors (9108616).

12111716 is a wasteful number, since it uses less digits than its factorization.

12111716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3550 (or 3548 counting only the distinct ones).

The product of its digits is 84, while the sum is 20.

The square root of 12111716 is about 3480.1890753234. The cubic root of 12111716 is about 229.6511156614.

Adding to 12111716 its reverse (61711121), we get a palindrome (73822837).

The spelling of 12111716 in words is "twelve million, one hundred eleven thousand, seven hundred sixteen".