111123304203 has 16 divisors (see below), whose sum is σ = 149186594816. Its totient is φ = 73572857280.

The previous prime is 111123304199. The next prime is 111123304247. The reversal of 111123304203 is 302403321111.

It is not a de Polignac number, because 111123304203 - 2² = 111123304199 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 111123304203.

It is not an unprimeable number, because it can be changed into a prime (111123304403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36126 + ... + 472812.

It is an arithmetic number, because the mean of its divisors is an integer number (9324162176).

Almost surely, 2^111123304203 is an apocalyptic number.

111123304203 is a deficient number, since it is larger than the sum of its proper divisors (38063290613).

111123304203 is a wasteful number, since it uses less digits than its factorization.

111123304203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437274.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 111123304203 its reverse (302403321111), we get a palindrome (413526625314).

The spelling of 111123304203 in words is "one hundred eleven billion, one hundred twenty-three million, three hundred four thousand, two hundred three".