11217013 has 4 divisors (see below), whose sum is σ = 11229408. Its totient is φ = 11204620.

The previous prime is 11217007. The next prime is 11217043. The reversal of 11217013 is 31071211.

11217013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 11217013 - 2⁹ = 11216501 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 (11217043) 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, 4723 + ... + 6688.

It is an arithmetic number, because the mean of its divisors is an integer number (2807352).

Almost surely, 2^11217013 is an apocalyptic number.

It is an amenable number.

11217013 is a deficient number, since it is larger than the sum of its proper divisors (12395).

11217013 is an equidigital number, since it uses as much as digits as its factorization.

11217013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12394.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 11217013 is about 3349.1809446490. The cubic root of 11217013 is about 223.8510183348.

Adding to 11217013 its reverse (31071211), we get a palindrome (42288224).

The spelling of 11217013 in words is "eleven million, two hundred seventeen thousand, thirteen".