320022103561 has 2 divisors, whose sum is σ = 320022103562. Its totient is φ = 320022103560.

The previous prime is 320022103501. The next prime is 320022103603. The reversal of 320022103561 is 165301220023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197441590336 + 122580513225 = 444344^2 + 350115^2 .

It is a cyclic number.

It is not a de Polignac number, because 320022103561 - 2¹⁷ = 320021972489 is a prime.

It is not a weakly prime, because it can be changed into another prime (320022103501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160011051780 + 160011051781.

It is an arithmetic number, because the mean of its divisors is an integer number (160011051781).

Almost surely, 2^320022103561 is an apocalyptic number.

It is an amenable number.

320022103561 is a deficient number, since it is larger than the sum of its proper divisors (1).

320022103561 is an equidigital number, since it uses as much as digits as its factorization.

320022103561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 320022103561 its reverse (165301220023), we get a palindrome (485323323584).

The spelling of 320022103561 in words is "three hundred twenty billion, twenty-two million, one hundred three thousand, five hundred sixty-one".