12221336 has 24 divisors (see below), whose sum is σ = 23412060. Its totient is φ = 5979600.

The previous prime is 12221333. The next prime is 12221353. The reversal of 12221336 is 63312221.

It is a happy number.

It is a super-2 number, since 2×12221336² = 298722107249792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221333) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80861 + ... + 81011.

Almost surely, 2^12221336 is an apocalyptic number.

It is an amenable number.

12221336 is a deficient number, since it is larger than the sum of its proper divisors (11190724).

12221336 is an equidigital number, since it uses as much as digits as its factorization.

12221336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 220 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 12221336 is about 3495.9027446426. The cubic root of 12221336 is about 230.3418734380.

Adding to 12221336 its reverse (63312221), we get a palindrome (75533557).

The spelling of 12221336 in words is "twelve million, two hundred twenty-one thousand, three hundred thirty-six".