111144321 has 24 divisors (see below), whose sum is σ = 162714240. Its totient is φ = 73102176.

The previous prime is 111144307. The next prime is 111144343. The reversal of 111144321 is 123441111.

It is not a de Polignac number, because 111144321 - 2⁵ = 111144289 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111144294 and 111144303.

It is not an unprimeable number, because it can be changed into a prime (111144361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 350455 + ... + 350771.

It is an arithmetic number, because the mean of its divisors is an integer number (6779760).

Almost surely, 2^111144321 is an apocalyptic number.

It is an amenable number.

111144321 is a deficient number, since it is larger than the sum of its proper divisors (51569919).

111144321 is a wasteful number, since it uses less digits than its factorization.

111144321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725 (or 722 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 111144321 is about 10542.5006995494. The cubic root of 111144321 is about 480.7977489460.

Adding to 111144321 its reverse (123441111), we get a palindrome (234585432).

The spelling of 111144321 in words is "one hundred eleven million, one hundred forty-four thousand, three hundred twenty-one".