11223211 has 4 divisors (see below), whose sum is σ = 11236752. Its totient is φ = 11209672.

The previous prime is 11223181. The next prime is 11223253. The reversal of 11223211 is 11232211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11223211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11223191 and 11223200.

It is not an unprimeable number, because it can be changed into a prime (11223811) 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 in 3 ways as a sum of consecutive naturals, for example, 5440 + ... + 7213.

It is an arithmetic number, because the mean of its divisors is an integer number (2809188).

Almost surely, 2^11223211 is an apocalyptic number.

11223211 is a deficient number, since it is larger than the sum of its proper divisors (13541).

11223211 is an equidigital number, since it uses as much as digits as its factorization.

11223211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13540.

The product of its digits is 24, while the sum is 13.

The square root of 11223211 is about 3350.1061177222. The cubic root of 11223211 is about 223.8922406325.

Adding to 11223211 its reverse (11232211), we get a palindrome (22455422).

The spelling of 11223211 in words is "eleven million, two hundred twenty-three thousand, two hundred eleven".