111221222 has 8 divisors (see below), whose sum is σ = 190664976. Its totient is φ = 47666232.

The previous prime is 111221221. The next prime is 111221237. The reversal of 111221222 is 222122111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (14), and also a Moran number because the ratio is a prime number: 7944373 = 111221222 / (1 + 1 + 1 + 2 + 2 + 1 + 2 + 2 + 2).

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 = 111221197 and 111221206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3972173 + ... + 3972200.

It is an arithmetic number, because the mean of its divisors is an integer number (23833122).

Almost surely, 2^111221222 is an apocalyptic number.

111221222 is a deficient number, since it is larger than the sum of its proper divisors (79443754).

111221222 is an equidigital number, since it uses as much as digits as its factorization.

111221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7944382.

The product of its digits is 32, while the sum is 14.

The square root of 111221222 is about 10546.1472585964. The cubic root of 111221222 is about 480.9086117209.

Adding to 111221222 its reverse (222122111), we get a palindrome (333343333).

The spelling of 111221222 in words is "one hundred eleven million, two hundred twenty-one thousand, two hundred twenty-two".