13221032132 has 96 divisors (see below), whose sum is σ = 30741258240. Its totient is φ = 4822139520.

The previous prime is 13221032131. The next prime is 13221032137. The reversal of 13221032132 is 23123012231.

It is not an unprimeable number, because it can be changed into a prime (13221032131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 313094 + ... + 352802.

It is an arithmetic number, because the mean of its divisors is an integer number (320221440).

Almost surely, 2^13221032132 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 13221032132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15370629120).

13221032132 is an abundant number, since it is smaller than the sum of its proper divisors (17520226108).

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

13221032132 is a wasteful number, since it uses less digits than its factorization.

13221032132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39801 (or 39799 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13221032132 its reverse (23123012231), we get a palindrome (36344044363).

The spelling of 13221032132 in words is "thirteen billion, two hundred twenty-one million, thirty-two thousand, one hundred thirty-two".