20302132121 has 2 divisors, whose sum is σ = 20302132122. Its totient is φ = 20302132120.

The previous prime is 20302132061. The next prime is 20302132163. The reversal of 20302132121 is 12123120302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16335651721 + 3966480400 = 127811^2 + 62980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20302132121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20302132121.

It is not a weakly prime, because it can be changed into another prime (20302131121) 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, 10151066060 + 10151066061.

It is an arithmetic number, because the mean of its divisors is an integer number (10151066061).

Almost surely, 2^20302132121 is an apocalyptic number.

It is an amenable number.

20302132121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20302132121 is an equidigital number, since it uses as much as digits as its factorization.

20302132121 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 17.

Adding to 20302132121 its reverse (12123120302), we get a palindrome (32425252423).

The spelling of 20302132121 in words is "twenty billion, three hundred two million, one hundred thirty-two thousand, one hundred twenty-one".