2111120121111 has 8 divisors (see below), whose sum is σ = 2846454096240. Its totient is φ = 1391599780032.

The previous prime is 2111120121109. The next prime is 2111120121161. The reversal of 2111120121111 is 1111210211112.

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

It is not a de Polignac number, because 2111120121111 - 2¹ = 2111120121109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111120121161) 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, 3953408200 + ... + 3953408733.

It is an arithmetic number, because the mean of its divisors is an integer number (355806762030).

Almost surely, 2^{2111120121111} is an apocalyptic number.

2111120121111 is a deficient number, since it is larger than the sum of its proper divisors (735333975129).

2111120121111 is an equidigital number, since it uses as much as digits as its factorization.

2111120121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7906817025.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 2111120121111 its reverse (1111210211112), we get a palindrome (3222330332223).

Subtracting from 2111120121111 its reverse (1111210211112), we obtain a palindrome (999909909999).

The spelling of 2111120121111 in words is "two trillion, one hundred eleven billion, one hundred twenty million, one hundred twenty-one thousand, one hundred eleven".