2111211112111 has 8 divisors (see below), whose sum is σ = 2132485249104. Its totient is φ = 2089965552960.

The previous prime is 2111211112093. The next prime is 2111211112117. The reversal of 2111211112111 is 1112111121112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2111211112111 - 2⁵ = 2111211112079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111211112117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6995950 + ... + 7291483.

It is an arithmetic number, because the mean of its divisors is an integer number (266560656138).

Almost surely, 2^{2111211112111} is an apocalyptic number.

2111211112111 is a deficient number, since it is larger than the sum of its proper divisors (21274136993).

2111211112111 is a wasteful number, since it uses less digits than its factorization.

2111211112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14288921.

The product of its digits is 8, while the sum is 16.

Adding to 2111211112111 its reverse (1112111121112), we get a palindrome (3223322233223).

Subtracting from 2111211112111 its reverse (1112111121112), we obtain a palindrome (999099990999).

It can be divided in two parts, 2 and 111211112111, that multiplied together give a palindrome (222422224222).

The spelling of 2111211112111 in words is "two trillion, one hundred eleven billion, two hundred eleven million, one hundred twelve thousand, one hundred eleven".