320501350121 has 2 divisors, whose sum is σ = 320501350122. Its totient is φ = 320501350120.

The previous prime is 320501350049. The next prime is 320501350129. The reversal of 320501350121 is 121053105023.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 296681749225 + 23819600896 = 544685^2 + 154336^2 .

It is an emirp because it is prime and its reverse (121053105023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320501350121 - 2³⁴ = 303321480937 is a prime.

It is a super-2 number, since 2×320501350121² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (320501350129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160250675060 + 160250675061.

It is an arithmetic number, because the mean of its divisors is an integer number (160250675061).

Almost surely, 2^320501350121 is an apocalyptic number.

It is an amenable number.

320501350121 is a deficient number, since it is larger than the sum of its proper divisors (1).

320501350121 is an equidigital number, since it uses as much as digits as its factorization.

320501350121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 320501350121 its reverse (121053105023), we get a palindrome (441554455144).

The spelling of 320501350121 in words is "three hundred twenty billion, five hundred one million, three hundred fifty thousand, one hundred twenty-one".