12211338 has 32 divisors (see below), whose sum is σ = 27224640. Its totient is φ = 3628800.

The previous prime is 12211337. The next prime is 12211343. The reversal of 12211338 is 83311221.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12211333) 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 in 15 ways as a sum of consecutive naturals, for example, 1213 + ... + 5088.

It is an arithmetic number, because the mean of its divisors is an integer number (850770).

Almost surely, 2^12211338 is an apocalyptic number.

12211338 is an abundant number, since it is smaller than the sum of its proper divisors (15013302).

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

12211338 is a wasteful number, since it uses less digits than its factorization.

12211338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6342.

The product of its digits is 288, while the sum is 21.

The square root of 12211338 is about 3494.4724923799. The cubic root of 12211338 is about 230.2790438004.

Adding to 12211338 its reverse (83311221), we get a palindrome (95522559).

The spelling of 12211338 in words is "twelve million, two hundred eleven thousand, three hundred thirty-eight".