13220243241 has 4 divisors (see below), whose sum is σ = 17626990992. Its totient is φ = 8813495492.

The previous prime is 13220243233. The next prime is 13220243293. The reversal of 13220243241 is 14234202231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13220243241 - 2³ = 13220243233 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13220243441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2203373871 + ... + 2203373876.

It is an arithmetic number, because the mean of its divisors is an integer number (4406747748).

Almost surely, 2^13220243241 is an apocalyptic number.

It is an amenable number.

13220243241 is a deficient number, since it is larger than the sum of its proper divisors (4406747751).

13220243241 is an equidigital number, since it uses as much as digits as its factorization.

13220243241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4406747750.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 13220243241 its reverse (14234202231), we get a palindrome (27454445472).

The spelling of 13220243241 in words is "thirteen billion, two hundred twenty million, two hundred forty-three thousand, two hundred forty-one".