11211224 has 8 divisors (see below), whose sum is σ = 21021060. Its totient is φ = 5605608.

The previous prime is 11211217. The next prime is 11211229. The reversal of 11211224 is 42211211.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

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 = 11211199 and 11211208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211229) 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 as a sum of consecutive naturals, namely, 700694 + ... + 700709.

Almost surely, 2^11211224 is an apocalyptic number.

It is an amenable number.

11211224 is a deficient number, since it is larger than the sum of its proper divisors (9809836).

11211224 is a wasteful number, since it uses less digits than its factorization.

11211224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401409 (or 1401405 counting only the distinct ones).

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

The square root of 11211224 is about 3348.3165919608. The cubic root of 11211224 is about 223.8125025393.

Adding to 11211224 its reverse (42211211), we get a palindrome (53422435).

The spelling of 11211224 in words is "eleven million, two hundred eleven thousand, two hundred twenty-four".