320102032021 has 4 divisors (see below), whose sum is σ = 320143519852. Its totient is φ = 320060544192.

The previous prime is 320102032013. The next prime is 320102032067. The reversal of 320102032021 is 120230201023.

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 215378599921 + 104723432100 = 464089^2 + 323610^2 .

It is a cyclic number.

It is not a de Polignac number, because 320102032021 - 2³ = 320102032013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320102031986 and 320102032004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320102032421) 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, 20732340 + ... + 20747773.

It is an arithmetic number, because the mean of its divisors is an integer number (80035879963).

Almost surely, 2^320102032021 is an apocalyptic number.

It is an amenable number.

320102032021 is a deficient number, since it is larger than the sum of its proper divisors (41487831).

320102032021 is an equidigital number, since it uses as much as digits as its factorization.

320102032021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41487830.

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

Adding to 320102032021 its reverse (120230201023), we get a palindrome (440332233044).

The spelling of 320102032021 in words is "three hundred twenty billion, one hundred two million, thirty-two thousand, twenty-one".