13130033221 has 4 divisors (see below), whose sum is σ = 13130891392. Its totient is φ = 13129175052.

The previous prime is 13130033209. The next prime is 13130033327. The reversal of 13130033221 is 12233003131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12233003131 = 4057 ⋅3015283.

It is a cyclic number.

It is not a de Polignac number, because 13130033221 - 2¹⁹ = 13129508933 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 (13130033921) 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, 405711 + ... + 436876.

It is an arithmetic number, because the mean of its divisors is an integer number (3282722848).

Almost surely, 2^13130033221 is an apocalyptic number.

It is an amenable number.

13130033221 is a deficient number, since it is larger than the sum of its proper divisors (858171).

13130033221 is an equidigital number, since it uses as much as digits as its factorization.

13130033221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858170.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 13130033221 its reverse (12233003131), we get a palindrome (25363036352).

The spelling of 13130033221 in words is "thirteen billion, one hundred thirty million, thirty-three thousand, two hundred twenty-one".