111140111 has 4 divisors (see below), whose sum is σ = 111704472. Its totient is φ = 110575752.

The previous prime is 111140087. The next prime is 111140131. The reversal of 111140111 is 111041111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111041111 = 19 ⋅5844269.

It is a cyclic number.

It is not a de Polignac number, because 111140111 - 2⁶ = 111140047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111140092 and 111140101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111140131) 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, 281885 + ... + 282278.

It is an arithmetic number, because the mean of its divisors is an integer number (27926118).

Almost surely, 2^111140111 is an apocalyptic number.

111140111 is a deficient number, since it is larger than the sum of its proper divisors (564361).

111140111 is an equidigital number, since it uses as much as digits as its factorization.

111140111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564360.

The product of its (nonzero) digits is 4, while the sum is 11.

The square root of 111140111 is about 10542.3010296614. The cubic root of 111140111 is about 480.7916782082.

Adding to 111140111 its reverse (111041111), we get a palindrome (222181222).

The spelling of 111140111 in words is "one hundred eleven million, one hundred forty thousand, one hundred eleven".