320002320221 has 16 divisors (see below), whose sum is σ = 331430400000. Its totient is φ = 308644982400.

The previous prime is 320002320191. The next prime is 320002320251. The reversal of 320002320221 is 122023200023.

It is an interprime number because it is at equal distance from previous prime (320002320191) and next prime (320002320251).

It is a cyclic number.

It is not a de Polignac number, because 320002320221 - 2¹⁴ = 320002303837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320002320221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320002320251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12177905 + ... + 12204153.

It is an arithmetic number, because the mean of its divisors is an integer number (20714400000).

Almost surely, 2^320002320221 is an apocalyptic number.

320002320221 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

320002320221 is a deficient number, since it is larger than the sum of its proper divisors (11428079779).

320002320221 is a wasteful number, since it uses less digits than its factorization.

320002320221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27580.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 320002320221 its reverse (122023200023), we get a palindrome (442025520244).

The spelling of 320002320221 in words is "three hundred twenty billion, two million, three hundred twenty thousand, two hundred twenty-one".