13223030021 has 4 divisors (see below), whose sum is σ = 13231448544. Its totient is φ = 13214611500.

The previous prime is 13223030017. The next prime is 13223030053. The reversal of 13223030021 is 12003032231.

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: 12003032231 = 23753 ⋅505327.

It is a cyclic number.

It is not a de Polignac number, because 13223030021 - 2² = 13223030017 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 (13223030071) 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, 4206905 + ... + 4210046.

It is an arithmetic number, because the mean of its divisors is an integer number (3307862136).

Almost surely, 2^13223030021 is an apocalyptic number.

It is an amenable number.

13223030021 is a deficient number, since it is larger than the sum of its proper divisors (8418523).

13223030021 is an equidigital number, since it uses as much as digits as its factorization.

13223030021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8418522.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 13223030021 its reverse (12003032231), we get a palindrome (25226062252).

The spelling of 13223030021 in words is "thirteen billion, two hundred twenty-three million, thirty thousand, twenty-one".