222211224 has 96 divisors (see below), whose sum is σ = 642844800. Its totient is φ = 69189120.

The previous prime is 222211201. The next prime is 222211247. The reversal of 222211224 is 422112222.

It is an interprime number because it is at equal distance from previous prime (222211201) and next prime (222211247).

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 = 222211197 and 222211206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63012 + ... + 66444.

It is an arithmetic number, because the mean of its divisors is an integer number (6696300).

Almost surely, 2^222211224 is an apocalyptic number.

222211224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222211224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321422400).

222211224 is an abundant number, since it is smaller than the sum of its proper divisors (420633576).

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

222211224 is a wasteful number, since it uses less digits than its factorization.

222211224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3505 (or 3498 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 222211224 is about 14906.7509538464. The cubic root of 222211224 is about 605.6968715645.

Adding to 222211224 its reverse (422112222), we get a palindrome (644323446).

The spelling of 222211224 in words is "two hundred twenty-two million, two hundred eleven thousand, two hundred twenty-four".