2100111112111 has 4 divisors (see below), whose sum is σ = 2100695616432. Its totient is φ = 2099526607792.

The previous prime is 2100111112109. The next prime is 2100111112129. The reversal of 2100111112111 is 1112111110012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2100111112111 - 2¹ = 2100111112109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100111112091 and 2100111112100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100111112811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292246771 + ... + 292253956.

It is an arithmetic number, because the mean of its divisors is an integer number (525173904108).

Almost surely, 2^{2100111112111} is an apocalyptic number.

2100111112111 is a deficient number, since it is larger than the sum of its proper divisors (584504321).

2100111112111 is an equidigital number, since it uses as much as digits as its factorization.

2100111112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584504320.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 2100111112111 its reverse (1112111110012), we get a palindrome (3212222222123).

The spelling of 2100111112111 in words is "two trillion, one hundred billion, one hundred eleven million, one hundred twelve thousand, one hundred eleven".