20011320113 has 2 divisors, whose sum is σ = 20011320114. Its totient is φ = 20011320112.

The previous prime is 20011320107. The next prime is 20011320151. The reversal of 20011320113 is 31102311002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16341020224 + 3670299889 = 127832^2 + 60583^2 .

It is a cyclic number.

It is not a de Polignac number, because 20011320113 - 2¹⁴ = 20011303729 is a prime.

It is not a weakly prime, because it can be changed into another prime (20011322113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005660056 + 10005660057.

It is an arithmetic number, because the mean of its divisors is an integer number (10005660057).

Almost surely, 2^20011320113 is an apocalyptic number.

It is an amenable number.

20011320113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011320113 is an equidigital number, since it uses as much as digits as its factorization.

20011320113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20011320113 its reverse (31102311002), we get a palindrome (51113631115).

The spelling of 20011320113 in words is "twenty billion, eleven million, three hundred twenty thousand, one hundred thirteen".