11223212 has 48 divisors (see below), whose sum is σ = 26380032. Its totient is φ = 4034880.

The previous prime is 11223181. The next prime is 11223253. The reversal of 11223212 is 21232211.

11223212 = T₄₃ + T₄₄ + ... + T₄₀₆.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2603 + ... + 5405.

It is an arithmetic number, because the mean of its divisors is an integer number (549584).

Almost surely, 2^11223212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11223212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13190016).

11223212 is an abundant number, since it is smaller than the sum of its proper divisors (15156820).

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

11223212 is a wasteful number, since it uses less digits than its factorization.

11223212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2838 (or 2836 counting only the distinct ones).

The product of its digits is 48, while the sum is 14.

The square root of 11223212 is about 3350.1062669712. The cubic root of 11223212 is about 223.8922472822.

Adding to 11223212 its reverse (21232211), we get a palindrome (32455423).

It can be divided in two parts, 1122 and 3212, that added together give a palindrome (4334).

The spelling of 11223212 in words is "eleven million, two hundred twenty-three thousand, two hundred twelve".