13213323021 has 8 divisors (see below), whose sum is σ = 17621400384. Its totient is φ = 8807063840.

The previous prime is 13213322939. The next prime is 13213323089. The reversal of 13213323021 is 12032331231.

13213323021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13213323021 - 2¹⁸ = 13213060877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13213321021) 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 7 ways as a sum of consecutive naturals, for example, 437496 + ... + 466721.

It is an arithmetic number, because the mean of its divisors is an integer number (2202675048).

Almost surely, 2^13213323021 is an apocalyptic number.

It is an amenable number.

13213323021 is a deficient number, since it is larger than the sum of its proper divisors (4408077363).

13213323021 is an equidigital number, since it uses as much as digits as its factorization.

13213323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909091.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 13213323021 its reverse (12032331231), we get a palindrome (25245654252).

The spelling of 13213323021 in words is "thirteen billion, two hundred thirteen million, three hundred twenty-three thousand, twenty-one".