111312101123 has 4 divisors (see below), whose sum is σ = 113136889728. Its totient is φ = 109487312520.

The previous prime is 111312101107. The next prime is 111312101129. The reversal of 111312101123 is 321101213111.

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 111312101123 - 2⁴ = 111312101107 is a prime.

It is a super-2 number, since 2×111312101123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111312101129) 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, 912394211 + ... + 912394332.

It is an arithmetic number, because the mean of its divisors is an integer number (28284222432).

Almost surely, 2^111312101123 is an apocalyptic number.

111312101123 is a deficient number, since it is larger than the sum of its proper divisors (1824788605).

111312101123 is an equidigital number, since it uses as much as digits as its factorization.

111312101123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824788604.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 111312101123 its reverse (321101213111), we get a palindrome (432413314234).

The spelling of 111312101123 in words is "one hundred eleven billion, three hundred twelve million, one hundred one thousand, one hundred twenty-three".