111355111243 has 8 divisors (see below), whose sum is σ = 114169221936. Its totient is φ = 108545673600.

The previous prime is 111355111223. The next prime is 111355111261. The reversal of 111355111243 is 342111553111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111355111243 - 2⁵ = 111355111211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111355111223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1119978 + ... + 1215343.

It is an arithmetic number, because the mean of its divisors is an integer number (14271152742).

Almost surely, 2^111355111243 is an apocalyptic number.

111355111243 is a deficient number, since it is larger than the sum of its proper divisors (2814110693).

111355111243 is a wasteful number, since it uses less digits than its factorization.

111355111243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336525.

The product of its digits is 1800, while the sum is 28.

Adding to 111355111243 its reverse (342111553111), we get a palindrome (453466664354).

The spelling of 111355111243 in words is "one hundred eleven billion, three hundred fifty-five million, one hundred eleven thousand, two hundred forty-three".