320111012002021 has 2 divisors, whose sum is σ = 320111012002022. Its totient is φ = 320111012002020.

The previous prime is 320111012002009. The next prime is 320111012002043. The reversal of 320111012002021 is 120200210111023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180874551979521 + 139236460022500 = 13448961^2 + 11799850^2 .

It is a cyclic number.

It is not a de Polignac number, because 320111012002021 - 2¹¹ = 320111011999973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320111012001986 and 320111012002004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320111012002921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160055506001010 + 160055506001011.

It is an arithmetic number, because the mean of its divisors is an integer number (160055506001011).

Almost surely, 2^{320111012002021} is an apocalyptic number.

It is an amenable number.

320111012002021 is a deficient number, since it is larger than the sum of its proper divisors (1).

320111012002021 is an equidigital number, since it uses as much as digits as its factorization.

320111012002021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 320111012002021 its reverse (120200210111023), we get a palindrome (440311222113044).

The spelling of 320111012002021 in words is "three hundred twenty trillion, one hundred eleven billion, twelve million, two thousand, twenty-one".