12216336 has 80 divisors (see below), whose sum is σ = 36479808. Its totient is φ = 3481600.

The previous prime is 12216313. The next prime is 12216349. The reversal of 12216336 is 63361221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8296 + ... + 9656.

Almost surely, 2^12216336 is an apocalyptic number.

12216336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12216336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18239904).

12216336 is an abundant number, since it is smaller than the sum of its proper divisors (24263472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12216336 is a wasteful number, since it uses less digits than its factorization.

12216336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400 (or 1394 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

The square root of 12216336 is about 3495.1875486160. The cubic root of 12216336 is about 230.3104566200.

Adding to 12216336 its reverse (63361221), we get a palindrome (75577557).

It can be divided in two parts, 1221 and 6336, that added together give a palindrome (7557).

The spelling of 12216336 in words is "twelve million, two hundred sixteen thousand, three hundred thirty-six".