13113232221 has 8 divisors (see below), whose sum is σ = 18048319744. Its totient is φ = 8460149760.

The previous prime is 13113232193. The next prime is 13113232229. The reversal of 13113232221 is 12223231131.

13113232221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13113232221 - 2⁶ = 13113232157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13113232229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70501156 + ... + 70501341.

It is an arithmetic number, because the mean of its divisors is an integer number (2256039968).

Almost surely, 2^13113232221 is an apocalyptic number.

It is an amenable number.

13113232221 is a deficient number, since it is larger than the sum of its proper divisors (4935087523).

13113232221 is a wasteful number, since it uses less digits than its factorization.

13113232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141002531.

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

Adding to 13113232221 its reverse (12223231131), we get a palindrome (25336463352).

The spelling of 13113232221 in words is "thirteen billion, one hundred thirteen million, two hundred thirty-two thousand, two hundred twenty-one".