2102111111927 has 2 divisors, whose sum is σ = 2102111111928. Its totient is φ = 2102111111926.

The previous prime is 2102111111911. The next prime is 2102111112011. The reversal of 2102111111927 is 7291111112012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2102111111927 - 2⁴ = 2102111111911 is a prime.

It is a super-2 number, since 2×2102111111927² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2102111111927.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102111111227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051055555963 + 1051055555964.

It is an arithmetic number, because the mean of its divisors is an integer number (1051055555964).

Almost surely, 2^{2102111111927} is an apocalyptic number.

2102111111927 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102111111927 is an equidigital number, since it uses as much as digits as its factorization.

2102111111927 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 29.

Adding to 2102111111927 its reverse (7291111112012), we get a palindrome (9393222223939).

The spelling of 2102111111927 in words is "two trillion, one hundred two billion, one hundred eleven million, one hundred eleven thousand, nine hundred twenty-seven".