320022022100021 has 4 divisors (see below), whose sum is σ = 338846846929452. Its totient is φ = 301197197270592.

The previous prime is 320022022099957. The next prime is 320022022100023. The reversal of 320022022100021 is 120001220220023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 293314056499396 + 26707965600625 = 17126414^2 + 5167975^2 .

It is a cyclic number.

It is not a de Polignac number, because 320022022100021 - 2⁶ = 320022022099957 is a prime.

It is a super-3 number, since 3×320022022100021³ (a number of 44 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 18824824829413 = 320022022100021 / (3 + 2 + 0 + 0 + 2 + 2 + 0 + 2 + 2 + 1 + 0 + 0 + 0 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320022022100023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9412412414690 + ... + 9412412414723.

It is an arithmetic number, because the mean of its divisors is an integer number (84711711732363).

Almost surely, 2^{320022022100021} is an apocalyptic number.

It is an amenable number.

320022022100021 is a deficient number, since it is larger than the sum of its proper divisors (18824824829431).

320022022100021 is a wasteful number, since it uses less digits than its factorization.

320022022100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18824824829430.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 320022022100021 its reverse (120001220220023), we get a palindrome (440023242320044).

The spelling of 320022022100021 in words is "three hundred twenty trillion, twenty-two billion, twenty-two million, one hundred thousand, twenty-one".