13232212221 has 8 divisors (see below), whose sum is σ = 17651237344. Its totient is φ = 8817330960.

The previous prime is 13232212187. The next prime is 13232212241. The reversal of 13232212221 is 12221223231.

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

It is a de Polignac number, because none of the positive numbers 2^k-13232212221 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 (13232212241) 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, 1028506 + ... + 1041291.

It is an arithmetic number, because the mean of its divisors is an integer number (2206404668).

Almost surely, 2^13232212221 is an apocalyptic number.

It is an amenable number.

13232212221 is a deficient number, since it is larger than the sum of its proper divisors (4419025123).

13232212221 is a wasteful number, since it uses less digits than its factorization.

13232212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071931.

The product of its digits is 576, while the sum is 21.

Adding to 13232212221 its reverse (12221223231), we get a palindrome (25453435452).

The spelling of 13232212221 in words is "thirteen billion, two hundred thirty-two million, two hundred twelve thousand, two hundred twenty-one".