13133243221 has 8 divisors (see below), whose sum is σ = 15015873024. Its totient is φ = 11252226480.

The previous prime is 13133243197. The next prime is 13133243231. The reversal of 13133243221 is 12234233131.

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

It is a cyclic number.

It is not a de Polignac number, because 13133243221 - 2³¹ = 10985759573 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 (13133243231) 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, 385765 + ... + 418426.

It is an arithmetic number, because the mean of its divisors is an integer number (1876984128).

Almost surely, 2^13133243221 is an apocalyptic number.

It is an amenable number.

13133243221 is a deficient number, since it is larger than the sum of its proper divisors (1882629803).

13133243221 is an equidigital number, since it uses as much as digits as its factorization.

13133243221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806531.

The product of its digits is 2592, while the sum is 25.

Adding to 13133243221 its reverse (12234233131), we get a palindrome (25367476352).

The spelling of 13133243221 in words is "thirteen billion, one hundred thirty-three million, two hundred forty-three thousand, two hundred twenty-one".