1211224 has 32 divisors (see below), whose sum is σ = 2661120. Its totient is φ = 506016.

The previous prime is 1211207. The next prime is 1211227. The reversal of 1211224 is 4221121.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211227) by changing a digit.

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, 2157 + ... + 2659.

It is an arithmetic number, because the mean of its divisors is an integer number (83160).

2^1211224 is an apocalyptic number.

1211224 is a gapful number since it is divisible by the number (14) 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 1211224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1330560).

1211224 is an abundant number, since it is smaller than the sum of its proper divisors (1449896).

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

1211224 is a wasteful number, since it uses less digits than its factorization.

1211224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559 (or 555 counting only the distinct ones).

The product of its digits is 32, while the sum is 13.

The square root of 1211224 is about 1100.5562230073. The cubic root of 1211224 is about 106.5961426185.

Adding to 1211224 its reverse (4221121), we get a palindrome (5432345).

It can be divided in two parts, 12 and 11224, that added together give a square (11236 = 106²).

The spelling of 1211224 in words is "one million, two hundred eleven thousand, two hundred twenty-four".