13221121332 has 24 divisors (see below), whose sum is σ = 30887438400. Its totient is φ = 4401589696.

The previous prime is 13221121313. The next prime is 13221121339. The reversal of 13221121332 is 23312112231.

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

It is a junction number, because it is equal to n+sod(n) for n = 13221121299 and 13221121308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221121339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 671232 + ... + 690647.

It is an arithmetic number, because the mean of its divisors is an integer number (1286976600).

Almost surely, 2^13221121332 is an apocalyptic number.

13221121332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13221121332 is an abundant number, since it is smaller than the sum of its proper divisors (17666317068).

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

13221121332 is a wasteful number, since it uses less digits than its factorization.

13221121332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362695 (or 1362693 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

Adding to 13221121332 its reverse (23312112231), we get a palindrome (36533233563).

The spelling of 13221121332 in words is "thirteen billion, two hundred twenty-one million, one hundred twenty-one thousand, three hundred thirty-two".