11102111123 has 4 divisors (see below), whose sum is σ = 11200360008. Its totient is φ = 11003862240.

The previous prime is 11102111107. The next prime is 11102111149. The reversal of 11102111123 is 32111120111.

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 11102111123 - 2⁴ = 11102111107 is a prime.

It is a super-2 number, since 2×11102111123² (a number of 21 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 = 11102111098 and 11102111107.

It is not an unprimeable number, because it can be changed into a prime (11102111023) 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, 49124273 + ... + 49124498.

It is an arithmetic number, because the mean of its divisors is an integer number (2800090002).

Almost surely, 2^11102111123 is an apocalyptic number.

11102111123 is a deficient number, since it is larger than the sum of its proper divisors (98248885).

11102111123 is an equidigital number, since it uses as much as digits as its factorization.

11102111123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98248884.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 11102111123 its reverse (32111120111), we get a palindrome (43213231234).

The spelling of 11102111123 in words is "eleven billion, one hundred two million, one hundred eleven thousand, one hundred twenty-three".