111122543 has 6 divisors (see below), whose sum is σ = 129265056. Its totient is φ = 95247852.

The previous prime is 111122533. The next prime is 111122549. The reversal of 111122543 is 345221111.

It is not a de Polignac number, because 111122543 - 2¹⁴ = 111106159 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 (111122549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1133855 + ... + 1133952.

It is an arithmetic number, because the mean of its divisors is an integer number (21544176).

Almost surely, 2^111122543 is an apocalyptic number.

111122543 is a deficient number, since it is larger than the sum of its proper divisors (18142513).

111122543 is an equidigital number, since it uses as much as digits as its factorization.

111122543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2267821 (or 2267814 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 111122543 is about 10541.4677820501. The cubic root of 111122543 is about 480.7663438406.

Adding to 111122543 its reverse (345221111), we get a palindrome (456343654).

The spelling of 111122543 in words is "one hundred eleven million, one hundred twenty-two thousand, five hundred forty-three".