12216716 has 6 divisors (see below), whose sum is σ = 21379260. Its totient is φ = 6108356.

The previous prime is 12216671. The next prime is 12216719. The reversal of 12216716 is 61761221.

12216716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12216719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1527086 + ... + 1527093.

It is an arithmetic number, because the mean of its divisors is an integer number (3563210).

Almost surely, 2^12216716 is an apocalyptic number.

It is an amenable number.

12216716 is a deficient number, since it is larger than the sum of its proper divisors (9162544).

12216716 is a wasteful number, since it uses less digits than its factorization.

12216716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054183 (or 3054181 counting only the distinct ones).

The product of its digits is 1008, while the sum is 26.

The square root of 12216716 is about 3495.2419086524. The cubic root of 12216716 is about 230.3128445991.

Adding to 12216716 its reverse (61761221), we get a palindrome (73977937).

The spelling of 12216716 in words is "twelve million, two hundred sixteen thousand, seven hundred sixteen".