320301221020 has 24 divisors (see below), whose sum is σ = 733780979568. Its totient is φ = 116473171200.

The previous prime is 320301220991. The next prime is 320301221027. The reversal of 320301221020 is 20122103023.

It is a junction number, because it is equal to n+sod(n) for n = 320301220985 and 320301221003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320301221027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 727957101 + ... + 727957540.

It is an arithmetic number, because the mean of its divisors is an integer number (30574207482).

Almost surely, 2^320301221020 is an apocalyptic number.

It is an amenable number.

320301221020 is an abundant number, since it is smaller than the sum of its proper divisors (413479758548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320301221020 is a wasteful number, since it uses less digits than its factorization.

320301221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455914661 (or 1455914659 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 320301221020 its reverse (20122103023), we get a palindrome (340423324043).

The spelling of 320301221020 in words is "three hundred twenty billion, three hundred one million, two hundred twenty-one thousand, twenty".