20201113 has 2 divisors, whose sum is σ = 20201114. Its totient is φ = 20201112.

The previous prime is 20201101. The next prime is 20201141. The reversal of 20201113 is 31110202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15303744 + 4897369 = 3912^2 + 2213^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201113 - 2²¹ = 18103961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20201113.

It is not a weakly prime, because it can be changed into another prime (20201143) 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, 10100556 + 10100557.

It is an arithmetic number, because the mean of its divisors is an integer number (10100557).

Almost surely, 2^20201113 is an apocalyptic number.

It is an amenable number.

20201113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201113 is an equidigital number, since it uses as much as digits as its factorization.

20201113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 20201113 is about 4494.5648287682. The cubic root of 20201113 is about 272.3485700187.

Adding to 20201113 its reverse (31110202), we get a palindrome (51311315).

It can be divided in two parts, 2020 and 1113, that multiplied together give a triangular number (2248260 = T₂₁₂₀).

The spelling of 20201113 in words is "twenty million, two hundred one thousand, one hundred thirteen".