111424111 has 4 divisors (see below), whose sum is σ = 112001632. Its totient is φ = 110846592.

The previous prime is 111424067. The next prime is 111424123.

111424111 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 111424111 - 2²³ = 103035503 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 (111422111) 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, 288471 + ... + 288856.

It is an arithmetic number, because the mean of its divisors is an integer number (28000408).

Almost surely, 2^111424111 is an apocalyptic number.

111424111 is a deficient number, since it is larger than the sum of its proper divisors (577521).

111424111 is an equidigital number, since it uses as much as digits as its factorization.

111424111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577520.

The product of its digits is 32, while the sum is 16.

The square root of 111424111 is about 10555.7619810225. The cubic root of 111424111 is about 481.2008574996.

The spelling of 111424111 in words is "one hundred eleven million, four hundred twenty-four thousand, one hundred eleven".