320023105221 has 8 divisors (see below), whose sum is σ = 426711751840. Its totient is φ = 213341597712.

The previous prime is 320023105211. The next prime is 320023105243. The reversal of 320023105221 is 122501320023.

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

It is not a de Polignac number, because 320023105221 - 2⁵ = 320023105189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320023105211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1679290 + ... + 1860123.

It is an arithmetic number, because the mean of its divisors is an integer number (53338968980).

Almost surely, 2^320023105221 is an apocalyptic number.

It is an amenable number.

320023105221 is a deficient number, since it is larger than the sum of its proper divisors (106688646619).

320023105221 is a wasteful number, since it uses less digits than its factorization.

320023105221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3569555.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 320023105221 its reverse (122501320023), we get a palindrome (442524425244).

The spelling of 320023105221 in words is "three hundred twenty billion, twenty-three million, one hundred five thousand, two hundred twenty-one".