20002011112261 has 2 divisors, whose sum is σ = 20002011112262. Its totient is φ = 20002011112260.

The previous prime is 20002011112159. The next prime is 20002011112273. The reversal of 20002011112261 is 16221111020002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15062976021025 + 4939035091236 = 3881105^2 + 2222394^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002011112261 - 2¹⁷ = 20002010981189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20002011112561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001005556130 + 10001005556131.

It is an arithmetic number, because the mean of its divisors is an integer number (10001005556131).

Almost surely, 2^{20002011112261} is an apocalyptic number.

It is an amenable number.

20002011112261 is a deficient number, since it is larger than the sum of its proper divisors (1).

20002011112261 is an equidigital number, since it uses as much as digits as its factorization.

20002011112261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 20002011112261 its reverse (16221111020002), we get a palindrome (36223122132263).

The spelling of 20002011112261 in words is "twenty trillion, two billion, eleven million, one hundred twelve thousand, two hundred sixty-one".