11008213 has 4 divisors (see below), whose sum is σ = 11276748. Its totient is φ = 10739680.

The previous prime is 11008189. The next prime is 11008229. The reversal of 11008213 is 31280011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31280011 = 7 ⋅4468573.

It can be written as a sum of positive squares in 2 ways, for example, as 6441444 + 4566769 = 2538^2 + 2137^2 .

It is a cyclic number.

It is not a de Polignac number, because 11008213 - 2⁹ = 11007701 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 (11008253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134206 + ... + 134287.

It is an arithmetic number, because the mean of its divisors is an integer number (2819187).

Almost surely, 2^11008213 is an apocalyptic number.

It is an amenable number.

11008213 is a deficient number, since it is larger than the sum of its proper divisors (268535).

11008213 is an equidigital number, since it uses as much as digits as its factorization.

11008213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268534.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 11008213 is about 3317.8627156650. The cubic root of 11008213 is about 222.4533454341.

Adding to 11008213 its reverse (31280011), we get a palindrome (42288224).

The spelling of 11008213 in words is "eleven million, eight thousand, two hundred thirteen".