320022221321 has 16 divisors (see below), whose sum is σ = 353162644800. Its totient is φ = 287574667200.

The previous prime is 320022221273. The next prime is 320022221369. The reversal of 320022221321 is 123122220023.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (320022221273) and next prime (320022221369).

It is a cyclic number.

It is not a de Polignac number, because 320022221321 - 2²⁶ = 319955112457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320022221293 and 320022221302.

It is not an unprimeable number, because it can be changed into a prime (320022221021) 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, 106850 + ... + 807131.

It is an arithmetic number, because the mean of its divisors is an integer number (22072665300).

Almost surely, 2^320022221321 is an apocalyptic number.

It is an amenable number.

320022221321 is a deficient number, since it is larger than the sum of its proper divisors (33140423479).

320022221321 is a wasteful number, since it uses less digits than its factorization.

320022221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914360.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 320022221321 its reverse (123122220023), we get a palindrome (443144441344).

The spelling of 320022221321 in words is "three hundred twenty billion, twenty-two million, two hundred twenty-one thousand, three hundred twenty-one".