13113432221 has 8 divisors (see below), whose sum is σ = 13782027840. Its totient is φ = 12453040512.

The previous prime is 13113432209. The next prime is 13113432253. The reversal of 13113432221 is 12223431131.

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

It is not a de Polignac number, because 13113432221 - 2¹⁰ = 13113431197 is a prime.

It is a super-2 number, since 2×13113432221² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13113432271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2047700 + ... + 2054093.

It is an arithmetic number, because the mean of its divisors is an integer number (1722753480).

Almost surely, 2^13113432221 is an apocalyptic number.

It is an amenable number.

13113432221 is a deficient number, since it is larger than the sum of its proper divisors (668595619).

13113432221 is a wasteful number, since it uses less digits than its factorization.

13113432221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4101955.

The product of its digits is 864, while the sum is 23.

Adding to 13113432221 its reverse (12223431131), we get a palindrome (25336863352).

The spelling of 13113432221 in words is "thirteen billion, one hundred thirteen million, four hundred thirty-two thousand, two hundred twenty-one".