13223220321 has 8 divisors (see below), whose sum is σ = 18107473024. Its totient is φ = 8577223920.

The previous prime is 13223220287. The next prime is 13223220331. The reversal of 13223220321 is 12302232231.

It is a happy number.

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

It is not a de Polignac number, because 13223220321 - 2⁹ = 13223219809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13223220331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59563945 + ... + 59564166.

It is an arithmetic number, because the mean of its divisors is an integer number (2263434128).

Almost surely, 2^13223220321 is an apocalyptic number.

It is an amenable number.

13223220321 is a deficient number, since it is larger than the sum of its proper divisors (4884252703).

13223220321 is a wasteful number, since it uses less digits than its factorization.

13223220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119128151.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 13223220321 its reverse (12302232231), we get a palindrome (25525452552).

The spelling of 13223220321 in words is "thirteen billion, two hundred twenty-three million, two hundred twenty thousand, three hundred twenty-one".