111421224 has 32 divisors (see below), whose sum is σ = 309504000. Its totient is φ = 37140336.

The previous prime is 111421183. The next prime is 111421243. The reversal of 111421224 is 422124111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 111421197 and 111421206.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257704 + ... + 258135.

It is an arithmetic number, because the mean of its divisors is an integer number (9672000).

Almost surely, 2^111421224 is an apocalyptic number.

It is an amenable number.

111421224 is an abundant number, since it is smaller than the sum of its proper divisors (198082776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111421224 is a wasteful number, since it uses less digits than its factorization.

111421224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515854 (or 515844 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 111421224 is about 10555.6252301794. The cubic root of 111421224 is about 481.1967014904.

Adding to 111421224 its reverse (422124111), we get a palindrome (533545335).

The spelling of 111421224 in words is "one hundred eleven million, four hundred twenty-one thousand, two hundred twenty-four".