111113121223 has 32 divisors (see below), whose sum is σ = 125744209920. Its totient is φ = 97481905920.

The previous prime is 111113121193. The next prime is 111113121239. The reversal of 111113121223 is 322121311111.

It is a cyclic number.

It is not a de Polignac number, because 111113121223 - 2⁵ = 111113121191 is a prime.

It is a super-2 number, since 2×111113121223² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111113121223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111113121263) 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, 7023240 + ... + 7039042.

It is an arithmetic number, because the mean of its divisors is an integer number (3929506560).

Almost surely, 2^111113121223 is an apocalyptic number.

111113121223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

111113121223 is a deficient number, since it is larger than the sum of its proper divisors (14631088697).

111113121223 is a wasteful number, since it uses less digits than its factorization.

111113121223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16159.

The product of its digits is 72, while the sum is 19.

Adding to 111113121223 its reverse (322121311111), we get a palindrome (433234432334).

The spelling of 111113121223 in words is "one hundred eleven billion, one hundred thirteen million, one hundred twenty-one thousand, two hundred twenty-three".