111120211111 has 8 divisors (see below), whose sum is σ = 136763336864. Its totient is φ = 87919287840.

The previous prime is 111120211087. The next prime is 111120211127. The reversal of 111120211111 is 111112021111.

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 111120211111 - 2¹⁷ = 111120080039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 111120211091 and 111120211100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111120511111) 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, 610550520 + ... + 610550701.

It is an arithmetic number, because the mean of its divisors is an integer number (17095417108).

Almost surely, 2^111120211111 is an apocalyptic number.

111120211111 is a deficient number, since it is larger than the sum of its proper divisors (25643125753).

111120211111 is a wasteful number, since it uses less digits than its factorization.

111120211111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221101241.

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

Adding to 111120211111 its reverse (111112021111), we get a palindrome (222232232222).

The spelling of 111120211111 in words is "one hundred eleven billion, one hundred twenty million, two hundred eleven thousand, one hundred eleven".