13213003021 has 4 divisors (see below), whose sum is σ = 13227900192. Its totient is φ = 13198105852.

The previous prime is 13213002967. The next prime is 13213003031. The reversal of 13213003021 is 12030031231.

13213003021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 13213003021 - 2¹³ = 13212994829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13213002986 and 13213003004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13213003031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7447255 + ... + 7449028.

It is an arithmetic number, because the mean of its divisors is an integer number (3306975048).

Almost surely, 2^13213003021 is an apocalyptic number.

It is an amenable number.

13213003021 is a deficient number, since it is larger than the sum of its proper divisors (14897171).

13213003021 is an equidigital number, since it uses as much as digits as its factorization.

13213003021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14897170.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 13213003021 its reverse (12030031231), we get a palindrome (25243034252).

The spelling of 13213003021 in words is "thirteen billion, two hundred thirteen million, three thousand, twenty-one".