12213716 has 12 divisors (see below), whose sum is σ = 21645120. Its totient is φ = 6029400.

The previous prime is 12213689. The next prime is 12213731. The reversal of 12213716 is 61731221.

It is a junction number, because it is equal to n+sod(n) for n = 12213691 and 12213700.

It is a congruent number.

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, 19010 + ... + 19641.

It is an arithmetic number, because the mean of its divisors is an integer number (1803760).

Almost surely, 2^12213716 is an apocalyptic number.

It is an amenable number.

12213716 is a deficient number, since it is larger than the sum of its proper divisors (9431404).

12213716 is a wasteful number, since it uses less digits than its factorization.

12213716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38734 (or 38732 counting only the distinct ones).

The product of its digits is 504, while the sum is 23.

The square root of 12213716 is about 3494.8127274577. The cubic root of 12213716 is about 230.2939907844.

Adding to 12213716 its reverse (61731221), we get a palindrome (73944937).

The spelling of 12213716 in words is "twelve million, two hundred thirteen thousand, seven hundred sixteen".