320032022221 has 4 divisors (see below), whose sum is σ = 320097647772. Its totient is φ = 319966396672.

The previous prime is 320032022209. The next prime is 320032022269. The reversal of 320032022221 is 122220230023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122220230023 = 197 ⋅620407259.

It can be written as a sum of positive squares in 2 ways, for example, as 33897964996 + 286134057225 = 184114^2 + 534915^2 .

It is a cyclic number.

It is not a de Polignac number, because 320032022221 - 2⁹ = 320032021709 is a prime.

It is a super-3 number, since 3×320032022221³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320032022621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32805460 + ... + 32815213.

It is an arithmetic number, because the mean of its divisors is an integer number (80024411943).

Almost surely, 2^320032022221 is an apocalyptic number.

It is an amenable number.

320032022221 is a deficient number, since it is larger than the sum of its proper divisors (65625551).

320032022221 is an equidigital number, since it uses as much as digits as its factorization.

320032022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65625550.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 320032022221 its reverse (122220230023), we get a palindrome (442252252244).

The spelling of 320032022221 in words is "three hundred twenty billion, thirty-two million, twenty-two thousand, two hundred twenty-one".