132221232 has 120 divisors (see below), whose sum is σ = 434795088. Its totient is φ = 36979200.

The previous prime is 132221207. The next prime is 132221233. The reversal of 132221232 is 232122231.

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

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (132221233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17382 + ... + 23802.

Almost surely, 2^132221232 is an apocalyptic number.

132221232 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 132221232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217397544).

132221232 is an abundant number, since it is smaller than the sum of its proper divisors (302573856).

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

132221232 is a wasteful number, since it uses less digits than its factorization.

132221232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6459 (or 6450 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 132221232 is about 11498.7491493640. The cubic root of 132221232 is about 509.4486313422.

Adding to 132221232 its reverse (232122231), we get a palindrome (364343463).

Subtracting 132221232 from its reverse (232122231), we obtain a palindrome (99900999).

The spelling of 132221232 in words is "one hundred thirty-two million, two hundred twenty-one thousand, two hundred thirty-two".