11215013 has 4 divisors (see below), whose sum is σ = 11272140. Its totient is φ = 11157888.

The previous prime is 11215003. The next prime is 11215027. The reversal of 11215013 is 31051211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5373124 + 5841889 = 2318^2 + 2417^2 .

It is a cyclic number.

It is not a de Polignac number, because 11215013 - 2⁸ = 11214757 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 (11215003) 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, 28268 + ... + 28661.

It is an arithmetic number, because the mean of its divisors is an integer number (2818035).

Almost surely, 2^11215013 is an apocalyptic number.

It is an amenable number.

11215013 is a deficient number, since it is larger than the sum of its proper divisors (57127).

11215013 is an equidigital number, since it uses as much as digits as its factorization.

11215013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57126.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 11215013 is about 3348.8823508747. The cubic root of 11215013 is about 223.8377132881.

Adding to 11215013 its reverse (31051211), we get a palindrome (42266224).

The spelling of 11215013 in words is "eleven million, two hundred fifteen thousand, thirteen".