11421224 has 8 divisors (see below), whose sum is σ = 21414810. Its totient is φ = 5710608.

The previous prime is 11421211. The next prime is 11421233. The reversal of 11421224 is 42212411.

It can be written as a sum of positive squares in only one way, i.e., 10956100 + 465124 = 3310^2 + 682^2 .

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 an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 713819 + ... + 713834.

Almost surely, 2^11421224 is an apocalyptic number.

It is an amenable number.

11421224 is a deficient number, since it is larger than the sum of its proper divisors (9993586).

11421224 is a wasteful number, since it uses less digits than its factorization.

11421224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427659 (or 1427655 counting only the distinct ones).

The product of its digits is 128, while the sum is 17.

The square root of 11421224 is about 3379.5301448574. The cubic root of 11421224 is about 225.2012947564.

Adding to 11421224 its reverse (42212411), we get a palindrome (53633635).

The spelling of 11421224 in words is "eleven million, four hundred twenty-one thousand, two hundred twenty-four".