2011020020917 has 2 divisors, whose sum is σ = 2011020020918. Its totient is φ = 2011020020916.

The previous prime is 2011020020879. The next prime is 2011020021041. The reversal of 2011020020917 is 7190200201102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1969169499441 + 41850521476 = 1403271^2 + 204574^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011020020917 - 2²⁷ = 2010885803189 is a prime.

It is a super-2 number, since 2×2011020020917² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2011020020891 and 2011020020900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011020020017) 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, 1005510010458 + 1005510010459.

It is an arithmetic number, because the mean of its divisors is an integer number (1005510010459).

Almost surely, 2^{2011020020917} is an apocalyptic number.

It is an amenable number.

2011020020917 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011020020917 is an equidigital number, since it uses as much as digits as its factorization.

2011020020917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 25.

The spelling of 2011020020917 in words is "two trillion, eleven billion, twenty million, twenty thousand, nine hundred seventeen".