320133403133021 has 2 divisors, whose sum is σ = 320133403133022. Its totient is φ = 320133403133020.

The previous prime is 320133403133003. The next prime is 320133403133149. The reversal of 320133403133021 is 120331304331023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249412215984100 + 70721187148921 = 15792790^2 + 8409589^2 .

It is a cyclic number.

It is not a de Polignac number, because 320133403133021 - 2¹⁸ = 320133402870877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320133403133221) 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, 160066701566510 + 160066701566511.

It is an arithmetic number, because the mean of its divisors is an integer number (160066701566511).

Almost surely, 2^{320133403133021} is an apocalyptic number.

It is an amenable number.

320133403133021 is a deficient number, since it is larger than the sum of its proper divisors (1).

320133403133021 is an equidigital number, since it uses as much as digits as its factorization.

320133403133021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 320133403133021 its reverse (120331304331023), we get a palindrome (440464707464044).

The spelling of 320133403133021 in words is "three hundred twenty trillion, one hundred thirty-three billion, four hundred three million, one hundred thirty-three thousand, twenty-one".