2105111069 has 2 divisors, whose sum is σ = 2105111070. Its totient is φ = 2105111068.

The previous prime is 2105111051. The next prime is 2105111111. The reversal of 2105111069 is 9601115012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1939345444 + 165765625 = 44038^2 + 12875^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105111069 - 2²⁸ = 1836675613 is a prime.

It is a super-2 number, since 2×2105111069² = 8862985225652645522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2105111009) 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, 1052555534 + 1052555535.

It is an arithmetic number, because the mean of its divisors is an integer number (1052555535).

Almost surely, 2^2105111069 is an apocalyptic number.

It is an amenable number.

2105111069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105111069 is an equidigital number, since it uses as much as digits as its factorization.

2105111069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 26.

The square root of 2105111069 is about 45881.4893938721. The cubic root of 2105111069 is about 1281.6172325594.

The spelling of 2105111069 in words is "two billion, one hundred five million, one hundred eleven thousand, sixty-nine".