13221135242 has 64 divisors (see below), whose sum is σ = 23540993280. Its totient is φ = 5452185600.

The previous prime is 13221135197. The next prime is 13221135247. The reversal of 13221135242 is 24253112231.

13221135242 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13221135247) 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, 12948692 + ... + 12949712.

It is an arithmetic number, because the mean of its divisors is an integer number (367828020).

Almost surely, 2^13221135242 is an apocalyptic number.

13221135242 is a deficient number, since it is larger than the sum of its proper divisors (10319858038).

13221135242 is a wasteful number, since it uses less digits than its factorization.

13221135242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407.

The product of its digits is 2880, while the sum is 26.

Adding to 13221135242 its reverse (24253112231), we get a palindrome (37474247473).

The spelling of 13221135242 in words is "thirteen billion, two hundred twenty-one million, one hundred thirty-five thousand, two hundred forty-two".