12216236 has 6 divisors (see below), whose sum is σ = 21378420. Its totient is φ = 6108116.

The previous prime is 12216227. The next prime is 12216247. The reversal of 12216236 is 63261221.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1527026 + ... + 1527033.

It is an arithmetic number, because the mean of its divisors is an integer number (3563070).

Almost surely, 2^12216236 is an apocalyptic number.

It is an amenable number.

12216236 is a deficient number, since it is larger than the sum of its proper divisors (9162184).

12216236 is a wasteful number, since it uses less digits than its factorization.

12216236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054063 (or 3054061 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 12216236 is about 3495.1732432027. The cubic root of 12216236 is about 230.3098281962.

Adding to 12216236 its reverse (63261221), we get a palindrome (75477457).

The spelling of 12216236 in words is "twelve million, two hundred sixteen thousand, two hundred thirty-six".