2100005111 has 2 divisors, whose sum is σ = 2100005112. Its totient is φ = 2100005110.

The previous prime is 2100005051. The next prime is 2100005137. The reversal of 2100005111 is 1115000012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2100005111 - 2¹⁰ = 2100004087 is a prime.

It is a super-2 number, since 2×2100005111² = 8820042932452244642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2100005092 and 2100005101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2100005711) 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, 1050002555 + 1050002556.

It is an arithmetic number, because the mean of its divisors is an integer number (1050002556).

Almost surely, 2^2100005111 is an apocalyptic number.

2100005111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100005111 is an equidigital number, since it uses as much as digits as its factorization.

2100005111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10, while the sum is 11.

The square root of 2100005111 is about 45825.8127151063. The cubic root of 2100005111 is about 1280.5802038819.

Adding to 2100005111 its reverse (1115000012), we get a palindrome (3215005123).

The spelling of 2100005111 in words is "two billion, one hundred million, five thousand, one hundred eleven".