2020105511 has 2 divisors, whose sum is σ = 2020105512. Its totient is φ = 2020105510.

The previous prime is 2020105501. The next prime is 2020105513. The reversal of 2020105511 is 1155010202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2020105511 - 2⁶ = 2020105447 is a prime.

It is a super-2 number, since 2×2020105511² = 8161652551145142242, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 2020105513, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2020105511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2020105513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010052755 + 1010052756.

It is an arithmetic number, because the mean of its divisors is an integer number (1010052756).

Almost surely, 2^2020105511 is an apocalyptic number.

2020105511 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020105511 is an equidigital number, since it uses as much as digits as its factorization.

2020105511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 2020105511 is about 44945.5838876302. The cubic root of 2020105511 is about 1264.1288739156.

Adding to 2020105511 its reverse (1155010202), we get a palindrome (3175115713).

The spelling of 2020105511 in words is "two billion, twenty million, one hundred five thousand, five hundred eleven".