111224321 has 4 divisors (see below), whose sum is σ = 119780052. Its totient is φ = 102668592.

The previous prime is 111224317. The next prime is 111224327. The reversal of 111224321 is 123422111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123422111 = 179 ⋅689509.

It can be written as a sum of positive squares in 2 ways, for example, as 66601921 + 44622400 = 8161^2 + 6680^2 .

It is not a de Polignac number, because 111224321 - 2² = 111224317 is a prime.

It is a super-2 number, since 2×111224321² = 24741699163822082, which 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 111224321.

It is not an unprimeable number, because it can be changed into a prime (111224327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4277846 + ... + 4277871.

It is an arithmetic number, because the mean of its divisors is an integer number (29945013).

Almost surely, 2^111224321 is an apocalyptic number.

It is an amenable number.

111224321 is a deficient number, since it is larger than the sum of its proper divisors (8555731).

111224321 is an equidigital number, since it uses as much as digits as its factorization.

111224321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8555730.

The product of its digits is 96, while the sum is 17.

The square root of 111224321 is about 10546.2941832665. The cubic root of 111224321 is about 480.9130782604.

Adding to 111224321 its reverse (123422111), we get a palindrome (234646432).

The spelling of 111224321 in words is "one hundred eleven million, two hundred twenty-four thousand, three hundred twenty-one".