320122303021 has 4 divisors (see below), whose sum is σ = 320225939100. Its totient is φ = 320018666944.

The previous prime is 320122302961. The next prime is 320122303037. The reversal of 320122303021 is 120303221023.

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 198871402500 + 121250900521 = 445950^2 + 348211^2 .

It is a cyclic number.

It is not a de Polignac number, because 320122303021 - 2⁷ = 320122302893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320122303021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320122303051) 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 3 ways as a sum of consecutive naturals, for example, 51813406 + ... + 51819583.

It is an arithmetic number, because the mean of its divisors is an integer number (80056484775).

Almost surely, 2^320122303021 is an apocalyptic number.

It is an amenable number.

320122303021 is a deficient number, since it is larger than the sum of its proper divisors (103636079).

320122303021 is a wasteful number, since it uses less digits than its factorization.

320122303021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103636078.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 320122303021 its reverse (120303221023), we get a palindrome (440425524044).

The spelling of 320122303021 in words is "three hundred twenty billion, one hundred twenty-two million, three hundred three thousand, twenty-one".