111216043 has 4 divisors (see below), whose sum is σ = 114221920. Its totient is φ = 108210168.

The previous prime is 111216031. The next prime is 111216071. The reversal of 111216043 is 340612111.

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 111216043 - 2¹³ = 111207851 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111216043.

It is not an unprimeable number, because it can be changed into a prime (111216643) 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, 1502883 + ... + 1502956.

It is an arithmetic number, because the mean of its divisors is an integer number (28555480).

Almost surely, 2^111216043 is an apocalyptic number.

111216043 is a deficient number, since it is larger than the sum of its proper divisors (3005877).

111216043 is an equidigital number, since it uses as much as digits as its factorization.

111216043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3005876.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 111216043 is about 10545.9017158326. The cubic root of 111216043 is about 480.9011471252.

Adding to 111216043 its reverse (340612111), we get a palindrome (451828154).

The spelling of 111216043 in words is "one hundred eleven million, two hundred sixteen thousand, forty-three".