111113043123 has 4 divisors (see below), whose sum is σ = 148150724168. Its totient is φ = 74075362080.

The previous prime is 111113043109. The next prime is 111113043133. The reversal of 111113043123 is 321340311111.

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

It is not a de Polignac number, because 111113043123 - 2⁹ = 111113042611 is a prime.

It is a super-2 number, since 2×111113043123² (a number of 23 digits) contains 22 as substring.

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 111113043123.

It is not an unprimeable number, because it can be changed into a prime (111113043133) 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, 18518840518 + ... + 18518840523.

It is an arithmetic number, because the mean of its divisors is an integer number (37037681042).

Almost surely, 2^111113043123 is an apocalyptic number.

111113043123 is a deficient number, since it is larger than the sum of its proper divisors (37037681045).

111113043123 is an equidigital number, since it uses as much as digits as its factorization.

111113043123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37037681044.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 111113043123 its reverse (321340311111), we get a palindrome (432453354234).

The spelling of 111113043123 in words is "one hundred eleven billion, one hundred thirteen million, forty-three thousand, one hundred twenty-three".