2111100009871 has 2 divisors, whose sum is σ = 2111100009872. Its totient is φ = 2111100009870.

The previous prime is 2111100009859. The next prime is 2111100009883. The reversal of 2111100009871 is 1789000011112.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2111100009859) and next prime (2111100009883).

It is a cyclic number.

It is not a de Polignac number, because 2111100009871 - 2⁵ = 2111100009839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111100009071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055550004935 + 1055550004936.

It is an arithmetic number, because the mean of its divisors is an integer number (1055550004936).

Almost surely, 2^{2111100009871} is an apocalyptic number.

2111100009871 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111100009871 is an equidigital number, since it uses as much as digits as its factorization.

2111100009871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 31.

The spelling of 2111100009871 in words is "two trillion, one hundred eleven billion, one hundred million, nine thousand, eight hundred seventy-one".