12211232 has 48 divisors (see below), whose sum is σ = 26544672. Its totient is φ = 5483520.

The previous prime is 12211231. The next prime is 12211249. The reversal of 12211232 is 23211221.

It is a happy number.

It is a super-2 number, since 2×12211232² = 298228373915648, which contains 22 as substring.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12211231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39623 + ... + 39929.

It is an arithmetic number, because the mean of its divisors is an integer number (553014).

Almost surely, 2^12211232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12211232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13272336).

12211232 is an abundant number, since it is smaller than the sum of its proper divisors (14333440).

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

12211232 is a wasteful number, since it uses less digits than its factorization.

12211232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 433 counting only the distinct ones).

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

The square root of 12211232 is about 3494.4573255371. The cubic root of 12211232 is about 230.2783774893.

Adding to 12211232 its reverse (23211221), we get a palindrome (35422453).

The spelling of 12211232 in words is "twelve million, two hundred eleven thousand, two hundred thirty-two".