111124321 has 16 divisors (see below), whose sum is σ = 138977280. Its totient is φ = 86320080.

The previous prime is 111124271. The next prime is 111124337. The reversal of 111124321 is 123421111.

It is not a de Polignac number, because 111124321 - 2¹¹ = 111122273 is a prime.

It is a super-2 number, since 2×111124321² = 24697229435422082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111124295 and 111124304.

It is not an unprimeable number, because it can be changed into a prime (111124381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24640 + ... + 28798.

It is an arithmetic number, because the mean of its divisors is an integer number (8686080).

Almost surely, 2^111124321 is an apocalyptic number.

111124321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111124321 is a deficient number, since it is larger than the sum of its proper divisors (27852959).

111124321 is a wasteful number, since it uses less digits than its factorization.

111124321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4524.

The product of its digits is 48, while the sum is 16.

The square root of 111124321 is about 10541.5521153196. The cubic root of 111124321 is about 480.7689079707.

Adding to 111124321 its reverse (123421111), we get a palindrome (234545432).

It can be divided in two parts, 111 and 124321, that multiplied together give a triangular number (13799631 = T₅₂₅₃).

The spelling of 111124321 in words is "one hundred eleven million, one hundred twenty-four thousand, three hundred twenty-one".