11624221 has 12 divisors (see below), whose sum is σ = 13747260. Its totient is φ = 9797760.

The previous prime is 11624213. The next prime is 11624227. The reversal of 11624221 is 12242611.

It can be written as a sum of positive squares in 2 ways, for example, as 3705625 + 7918596 = 1925^2 + 2814^2 .

It is not a de Polignac number, because 11624221 - 2³ = 11624213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11624227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1045 + ... + 4933.

It is an arithmetic number, because the mean of its divisors is an integer number (1145605).

Almost surely, 2^11624221 is an apocalyptic number.

It is an amenable number.

11624221 is a deficient number, since it is larger than the sum of its proper divisors (2123039).

11624221 is an equidigital number, since it uses as much as digits as its factorization.

11624221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3964 (or 3957 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 11624221 is about 3409.4311842300. The cubic root of 11624221 is about 226.5276846479.

Adding to 11624221 its reverse (12242611), we get a palindrome (23866832).

The spelling of 11624221 in words is "eleven million, six hundred twenty-four thousand, two hundred twenty-one".