320021120203 has 2 divisors, whose sum is σ = 320021120204. Its totient is φ = 320021120202.

The previous prime is 320021120161. The next prime is 320021120239. The reversal of 320021120203 is 302021120023.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320021120203 - 2¹⁷ = 320020989131 is a prime.

It is a super-2 number, since 2×320021120203² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (320021180203) 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 as a sum of consecutive naturals, namely, 160010560101 + 160010560102.

It is an arithmetic number, because the mean of its divisors is an integer number (160010560102).

Almost surely, 2^320021120203 is an apocalyptic number.

320021120203 is a deficient number, since it is larger than the sum of its proper divisors (1).

320021120203 is an equidigital number, since it uses as much as digits as its factorization.

320021120203 is an odious number, because the sum of its binary digits is odd.

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

Adding to 320021120203 its reverse (302021120023), we get a palindrome (622042240226).

The spelling of 320021120203 in words is "three hundred twenty billion, twenty-one million, one hundred twenty thousand, two hundred three".