12222336 has 64 divisors (see below), whose sum is σ = 37111680. Its totient is φ = 3491328.

The previous prime is 12222319. The next prime is 12222349. The reversal of 12222336 is 63322221.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (21).

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

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415 + ... + 4961.

It is an arithmetic number, because the mean of its divisors is an integer number (579870).

Almost surely, 2^12222336 is an apocalyptic number.

12222336 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 12222336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18555840).

12222336 is an abundant number, since it is smaller than the sum of its proper divisors (24889344).

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

12222336 is an equidigital number, since it uses as much as digits as its factorization.

12222336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4571 (or 4559 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 12222336 is about 3496.0457662908. The cubic root of 12222336 is about 230.3481557732.

Adding to 12222336 its reverse (63322221), we get a palindrome (75544557).

The spelling of 12222336 in words is "twelve million, two hundred twenty-two thousand, three hundred thirty-six".