12211304 has 64 divisors (see below), whose sum is σ = 28200960. Its totient is φ = 4838400.

The previous prime is 12211279. The next prime is 12211307. The reversal of 12211304 is 40311221.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211307) 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, 96089 + ... + 96215.

It is an arithmetic number, because the mean of its divisors is an integer number (440640).

Almost surely, 2^12211304 is an apocalyptic number.

12211304 is a gapful number since it is divisible by the number (14) 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 12211304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14100480).

12211304 is an abundant number, since it is smaller than the sum of its proper divisors (15989656).

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

12211304 is a wasteful number, since it uses less digits than its factorization.

12211304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 12211304 is about 3494.4676275507. The cubic root of 12211304 is about 230.2788300784.

Adding to 12211304 its reverse (40311221), we get a palindrome (52522525).

The spelling of 12211304 in words is "twelve million, two hundred eleven thousand, three hundred four".