13321033221 has 8 divisors (see below), whose sum is σ = 17763763104. Its totient is φ = 8879496080.

The previous prime is 13321033199. The next prime is 13321033273. The reversal of 13321033221 is 12233012331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13321033221 is a prime.

It is a super-3 number, since 3×13321033221³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321033021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271791 + ... + 317036.

It is an arithmetic number, because the mean of its divisors is an integer number (2220470388).

Almost surely, 2^13321033221 is an apocalyptic number.

It is an amenable number.

13321033221 is a deficient number, since it is larger than the sum of its proper divisors (4442729883).

13321033221 is an equidigital number, since it uses as much as digits as its factorization.

13321033221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596371.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 13321033221 its reverse (12233012331), we get a palindrome (25554045552).

The spelling of 13321033221 in words is "thirteen billion, three hundred twenty-one million, thirty-three thousand, two hundred twenty-one".