2111000001111 has 12 divisors (see below), whose sum is σ = 3077719629192. Its totient is φ = 1394180685456.

The previous prime is 2111000001109. The next prime is 2111000001137. The reversal of 2111000001111 is 1111000001112.

It is not a de Polignac number, because 2111000001111 - 2¹ = 2111000001109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2111000001093 and 2111000001102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111000001511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1096053036 + ... + 1096054961.

It is an arithmetic number, because the mean of its divisors is an integer number (256476635766).

Almost surely, 2^{2111000001111} is an apocalyptic number.

2111000001111 is a deficient number, since it is larger than the sum of its proper divisors (966719628081).

2111000001111 is a wasteful number, since it uses less digits than its factorization.

2111000001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192108110 (or 2192108107 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 2111000001111 its reverse (1111000001112), we get a palindrome (3222000002223).

Subtracting from 2111000001111 its reverse (1111000001112), we obtain a palindrome (999999999999).

The spelling of 2111000001111 in words is "two trillion, one hundred eleven billion, one thousand, one hundred eleven".