12225132 has 72 divisors (see below), whose sum is σ = 33174960. Its totient is φ = 3784320.

The previous prime is 12225107. The next prime is 12225149. The reversal of 12225132 is 23152221.

12225132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41578 + ... + 41870.

Almost surely, 2^12225132 is an apocalyptic number.

12225132 is a gapful number since it is divisible by the number (12) 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 12225132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16587480).

12225132 is an abundant number, since it is smaller than the sum of its proper divisors (20949828).

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

12225132 is a wasteful number, since it uses less digits than its factorization.

12225132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383 (or 378 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 12225132 is about 3496.4456237728. The cubic root of 12225132 is about 230.3657193644.

Adding to 12225132 its reverse (23152221), we get a palindrome (35377353).

The spelling of 12225132 in words is "twelve million, two hundred twenty-five thousand, one hundred thirty-two".