320021022213 has 6 divisors (see below), whose sum is σ = 462252587654. Its totient is φ = 213347348136.

The previous prime is 320021022161. The next prime is 320021022313. The reversal of 320021022213 is 312220120023.

It can be written as a sum of positive squares in only one way, i.e., 299473806564 + 20547215649 = 547242^2 + 143343^2 .

It is not a de Polignac number, because 320021022213 - 2²⁴ = 320004244997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320021022313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17778945670 + ... + 17778945687.

Almost surely, 2^320021022213 is an apocalyptic number.

It is an amenable number.

320021022213 is a deficient number, since it is larger than the sum of its proper divisors (142231565441).

320021022213 is a wasteful number, since it uses less digits than its factorization.

320021022213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35557891363 (or 35557891360 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 320021022213 its reverse (312220120023), we get a palindrome (632241142236).

The spelling of 320021022213 in words is "three hundred twenty billion, twenty-one million, twenty-two thousand, two hundred thirteen".