11111210110123 has 4 divisors (see below), whose sum is σ = 11111648464800. Its totient is φ = 11110771755448.

The previous prime is 11111210110067. The next prime is 11111210110139. The reversal of 11111210110123 is 32101101211111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11111210110123 is a prime.

It is a super-2 number, since 2×11111210110123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11111210110097 and 11111210110106.

It is not an unprimeable number, because it can be changed into a prime (11111210110183) 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, 219139315 + ... + 219190012.

It is an arithmetic number, because the mean of its divisors is an integer number (2777912116200).

Almost surely, 2^{11111210110123} is an apocalyptic number.

11111210110123 is a deficient number, since it is larger than the sum of its proper divisors (438354677).

11111210110123 is an equidigital number, since it uses as much as digits as its factorization.

11111210110123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438354676.

The product of its (nonzero) digits is 12, while the sum is 16.

Adding to 11111210110123 its reverse (32101101211111), we get a palindrome (43212311321234).

The spelling of 11111210110123 in words is "eleven trillion, one hundred eleven billion, two hundred ten million, one hundred ten thousand, one hundred twenty-three".