111312223223123 has 32 divisors (see below), whose sum is σ = 122600143411200. Its totient is φ = 100440012306816.

The previous prime is 111312223223059. The next prime is 111312223223143. The reversal of 111312223223123 is 321322322213111.

It is not a de Polignac number, because 111312223223123 - 2⁶ = 111312223223059 is a prime.

It is a super-2 number, since 2×111312223223123² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111312223223143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 447223436 + ... + 447472262.

It is an arithmetic number, because the mean of its divisors is an integer number (3831254481600).

Almost surely, 2^{111312223223123} is an apocalyptic number.

111312223223123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

111312223223123 is a deficient number, since it is larger than the sum of its proper divisors (11287920188077).

111312223223123 is a wasteful number, since it uses less digits than its factorization.

111312223223123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253251.

The product of its digits is 5184, while the sum is 29.

Adding to 111312223223123 its reverse (321322322213111), we get a palindrome (432634545436234).

The spelling of 111312223223123 in words is "one hundred eleven trillion, three hundred twelve billion, two hundred twenty-three million, two hundred twenty-three thousand, one hundred twenty-three".