111222 has 24 divisors (see below), whose sum is σ = 248976. Its totient is φ = 35856.

The previous prime is 111217. The next prime is 111227. The reversal of 111222 is 222111.

It is an interprime number because it is at equal distance from previous prime (111217) and next prime (111227).

It is a Harshad number since it is a multiple of its sum of digits (9).

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

It is a plaindrome in base 10.

It is a nialpdrome in base 11.

It is a zygodrome in base 8 and base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111227) by changing a digit.

111222 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 583 + ... + 749.

It is an arithmetic number, because the mean of its divisors is an integer number (10374).

2¹¹¹²²² is an apocalyptic number.

It is a pronic number, being equal to 333×334.

It is a practical number, because each smaller number is the sum of distinct divisors of 111222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124488).

111222 is an abundant number, since it is smaller than the sum of its proper divisors (137754).

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

111222 is a wasteful number, since it uses less digits than its factorization.

111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 209 counting only the distinct ones).

The product of its digits is 8, while the sum is 9.

The square root of 111222 is about 333.4996251872. The cubic root of 111222 is about 48.0909733048.

Adding to 111222 its reverse (222111), we get a palindrome (333333).

Subtracting 111222 from its reverse (222111), we obtain a square (110889 = 333²).

It can be divided in two parts, 111 and 222, that multiplied together give a palindrome (24642).

The spelling of 111222 in words is "one hundred eleven thousand, two hundred twenty-two", and thus it is an iban number.