13221132342 has 64 divisors (see below), whose sum is σ = 29551737600. Its totient is φ = 3908620800.

The previous prime is 13221132341. The next prime is 13221132377. The reversal of 13221132342 is 24323112231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221132341) 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, 2974842 + ... + 2979282.

It is an arithmetic number, because the mean of its divisors is an integer number (461745900).

Almost surely, 2^13221132342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13221132342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14775868800).

13221132342 is an abundant number, since it is smaller than the sum of its proper divisors (16330605258).

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

13221132342 is a wasteful number, since it uses less digits than its factorization.

13221132342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5549.

The product of its digits is 1728, while the sum is 24.

Adding to 13221132342 its reverse (24323112231), we get a palindrome (37544244573).

The spelling of 13221132342 in words is "thirteen billion, two hundred twenty-one million, one hundred thirty-two thousand, three hundred forty-two".