13001210221 has 4 divisors (see below), whose sum is σ = 13157851392. Its totient is φ = 12844569052.

The previous prime is 13001210213. The next prime is 13001210231. The reversal of 13001210221 is 12201210031.

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.

It is not a de Polignac number, because 13001210221 - 2³ = 13001210213 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 (13001210231) 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, 78320461 + ... + 78320626.

It is an arithmetic number, because the mean of its divisors is an integer number (3289462848).

Almost surely, 2^13001210221 is an apocalyptic number.

It is an amenable number.

13001210221 is a deficient number, since it is larger than the sum of its proper divisors (156641171).

13001210221 is an equidigital number, since it uses as much as digits as its factorization.

13001210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156641170.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 13001210221 its reverse (12201210031), we get a palindrome (25202420252).

The spelling of 13001210221 in words is "thirteen billion, one million, two hundred ten thousand, two hundred twenty-one".