11221313 has 4 divisors (see below), whose sum is σ = 11228160. Its totient is φ = 11214468.

The previous prime is 11221307. The next prime is 11221333. The reversal of 11221313 is 31312211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31312211 = 7 ⋅4473173.

It is a cyclic number.

It is not a de Polignac number, because 11221313 - 2¹⁶ = 11155777 is a prime.

It is a super-3 number, since 3×11221313³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221303) 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, 656 + ... + 4782.

It is an arithmetic number, because the mean of its divisors is an integer number (2807040).

Almost surely, 2^11221313 is an apocalyptic number.

It is an amenable number.

11221313 is a deficient number, since it is larger than the sum of its proper divisors (6847).

11221313 is an equidigital number, since it uses as much as digits as its factorization.

11221313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6846.

The product of its digits is 36, while the sum is 14.

The square root of 11221313 is about 3349.8228311360. The cubic root of 11221313 is about 223.8796188309.

Adding to 11221313 its reverse (31312211), we get a palindrome (42533524).

It can be divided in two parts, 1122 and 1313, that multiplied together give a triangular number (1473186 = T₁₇₁₆).

The spelling of 11221313 in words is "eleven million, two hundred twenty-one thousand, three hundred thirteen".