12213316 has 6 divisors (see below), whose sum is σ = 21373310. Its totient is φ = 6106656.

The previous prime is 12213283. The next prime is 12213317. The reversal of 12213316 is 61331221.

It can be written as a sum of positive squares in only one way, i.e., 8678916 + 3534400 = 2946^2 + 1880^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12213293 and 12213302.

It is not an unprimeable number, because it can be changed into a prime (12213317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1526661 + ... + 1526668.

Almost surely, 2^12213316 is an apocalyptic number.

It is an amenable number.

12213316 is a deficient number, since it is larger than the sum of its proper divisors (9159994).

12213316 is a wasteful number, since it uses less digits than its factorization.

12213316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3053333 (or 3053331 counting only the distinct ones).

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

The square root of 12213316 is about 3494.7554993161. The cubic root of 12213316 is about 230.2914767092.

Adding to 12213316 its reverse (61331221), we get a palindrome (73544537).

The spelling of 12213316 in words is "twelve million, two hundred thirteen thousand, three hundred sixteen".