11112311012123 has 4 divisors (see below), whose sum is σ = 11112317779248. Its totient is φ = 11112304245000.

The previous prime is 11112311012111. The next prime is 11112311012239. The reversal of 11112311012123 is 32121011321111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11112311012123 - 2²⁴ = 11112294234907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11112311012095 and 11112311012104.

It is not an unprimeable number, because it can be changed into a prime (11112311002123) 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 3 ways as a sum of consecutive naturals, for example, 822065 + ... + 4785437.

It is an arithmetic number, because the mean of its divisors is an integer number (2778079444812).

Almost surely, 2^{11112311012123} is an apocalyptic number.

11112311012123 is a deficient number, since it is larger than the sum of its proper divisors (6767125).

11112311012123 is an equidigital number, since it uses as much as digits as its factorization.

11112311012123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6767124.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 11112311012123 its reverse (32121011321111), we get a palindrome (43233322333234).

The spelling of 11112311012123 in words is "eleven trillion, one hundred twelve billion, three hundred eleven million, twelve thousand, one hundred twenty-three".