320220300021 has 16 divisors (see below), whose sum is σ = 433527091200. Its totient is φ = 210199709808.

The previous prime is 320220300013. The next prime is 320220300047. The reversal of 320220300021 is 120003022023.

It is not a de Polignac number, because 320220300021 - 2³ = 320220300013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320220300721) 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 15 ways as a sum of consecutive naturals, for example, 94270 + ... + 805808.

It is an arithmetic number, because the mean of its divisors is an integer number (27095443200).

Almost surely, 2^320220300021 is an apocalyptic number.

It is an amenable number.

320220300021 is a deficient number, since it is larger than the sum of its proper divisors (113306791179).

320220300021 is a wasteful number, since it uses less digits than its factorization.

320220300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713848.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 320220300021 its reverse (120003022023), we get a palindrome (440223322044).

The spelling of 320220300021 in words is "three hundred twenty billion, two hundred twenty million, three hundred thousand, twenty-one".