13033303221 has 16 divisors (see below), whose sum is σ = 18230175360. Its totient is φ = 8271090240.

The previous prime is 13033303189. The next prime is 13033303237. The reversal of 13033303221 is 12230333031.

It is not a de Polignac number, because 13033303221 - 2⁵ = 13033303189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13033303421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1048810 + ... + 1061163.

It is an arithmetic number, because the mean of its divisors is an integer number (1139385960).

Almost surely, 2^13033303221 is an apocalyptic number.

It is an amenable number.

13033303221 is a deficient number, since it is larger than the sum of its proper divisors (5196872139).

13033303221 is a wasteful number, since it uses less digits than its factorization.

13033303221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110076.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 13033303221 its reverse (12230333031), we get a palindrome (25263636252).

The spelling of 13033303221 in words is "thirteen billion, thirty-three million, three hundred three thousand, two hundred twenty-one".