1111120111 has 4 divisors (see below), whose sum is σ = 1112994432. Its totient is φ = 1109245792.

The previous prime is 1111120103. The next prime is 1111120117. The reversal of 1111120111 is 1110211111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1110211111 = 47 ⋅23621513.

It is a cyclic number.

It is not a de Polignac number, because 1111120111 - 2³ = 1111120103 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 (1111120117) 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, 936271 + ... + 937456.

It is an arithmetic number, because the mean of its divisors is an integer number (278248608).

Almost surely, 2^1111120111 is an apocalyptic number.

1111120111 is a deficient number, since it is larger than the sum of its proper divisors (1874321).

1111120111 is an equidigital number, since it uses as much as digits as its factorization.

1111120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874320.

The product of its (nonzero) digits is 2, while the sum is 10.

The square root of 1111120111 is about 33333.4683313933. The cubic root of 1111120111 is about 1035.7469651185.

Adding to 1111120111 its reverse (1110211111), we get a palindrome (2221331222).

The spelling of 1111120111 in words is "one billion, one hundred eleven million, one hundred twenty thousand, one hundred eleven".