11100111043 has 4 divisors (see below), whose sum is σ = 12685841200. Its totient is φ = 9514380888.

The previous prime is 11100111041. The next prime is 11100111047. The reversal of 11100111043 is 34011100111.

It is a happy number.

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 11100111043 - 2¹ = 11100111041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11100111041) 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, 792865068 + ... + 792865081.

It is an arithmetic number, because the mean of its divisors is an integer number (3171460300).

Almost surely, 2^11100111043 is an apocalyptic number.

11100111043 is a deficient number, since it is larger than the sum of its proper divisors (1585730157).

11100111043 is an equidigital number, since it uses as much as digits as its factorization.

11100111043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585730156.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11100111043 its reverse (34011100111), we get a palindrome (45111211154).

The spelling of 11100111043 in words is "eleven billion, one hundred million, one hundred eleven thousand, forty-three".