13221302032 has 10 divisors (see below), whose sum is σ = 25616272718. Its totient is φ = 6610651008.

The previous prime is 13221302011. The next prime is 13221302069. The reversal of 13221302032 is 23020312231.

It can be written as a sum of positive squares in only one way, i.e., 10957064976 + 2264237056 = 104676^2 + 47584^2 .

It is a super-3 number, since 3×13221302032³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413165673 + ... + 413165704.

Almost surely, 2^13221302032 is an apocalyptic number.

It is an amenable number.

13221302032 is a deficient number, since it is larger than the sum of its proper divisors (12394970686).

13221302032 is an equidigital number, since it uses as much as digits as its factorization.

13221302032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826331385 (or 826331379 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 13221302032 its reverse (23020312231), we get a palindrome (36241614263).

The spelling of 13221302032 in words is "thirteen billion, two hundred twenty-one million, three hundred two thousand, thirty-two".