211120112111 has 4 divisors (see below), whose sum is σ = 211126356072. Its totient is φ = 211113868152.

The previous prime is 211120112101. The next prime is 211120112171. The reversal of 211120112111 is 111211021112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211120112111 is a prime.

It is a super-3 number, since 3×211120112111³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211120112101) 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, 3070985 + ... + 3138978.

It is an arithmetic number, because the mean of its divisors is an integer number (52781589018).

Almost surely, 2^211120112111 is an apocalyptic number.

211120112111 is a deficient number, since it is larger than the sum of its proper divisors (6243961).

211120112111 is an equidigital number, since it uses as much as digits as its factorization.

211120112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6243960.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 211120112111 its reverse (111211021112), we get a palindrome (322331133223).

Subtracting from 211120112111 its reverse (111211021112), we obtain a palindrome (99909090999).

The spelling of 211120112111 in words is "two hundred eleven billion, one hundred twenty million, one hundred twelve thousand, one hundred eleven".