111200100443 has 4 divisors (see below), whose sum is σ = 117741282840. Its totient is φ = 104658918048.

The previous prime is 111200100433. The next prime is 111200100469. The reversal of 111200100443 is 344001002111.

It is a happy number.

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

It is not a de Polignac number, because 111200100443 - 2¹⁰ = 111200099419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 6541182379 = 111200100443 / (1 + 1 + 1 + 2 + 0 + 0 + 1 + 0 + 0 + 4 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111200100413) 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 3 ways as a sum of consecutive naturals, for example, 3270591173 + ... + 3270591206.

It is an arithmetic number, because the mean of its divisors is an integer number (29435320710).

Almost surely, 2^111200100443 is an apocalyptic number.

111200100443 is a deficient number, since it is larger than the sum of its proper divisors (6541182397).

111200100443 is an equidigital number, since it uses as much as digits as its factorization.

111200100443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6541182396.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 111200100443 its reverse (344001002111), we get a palindrome (455201102554).

The spelling of 111200100443 in words is "one hundred eleven billion, two hundred million, one hundred thousand, four hundred forty-three".