11105213 has 6 divisors (see below), whose sum is σ = 12918366. Its totient is φ = 9518712.

The previous prime is 11105201. The next prime is 11105221. The reversal of 11105213 is 31250111.

It can be written as a sum of positive squares in only one way, i.e., 8602489 + 2502724 = 2933^2 + 1582^2 .

It is not a de Polignac number, because 11105213 - 2⁴ = 11105197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11105243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113270 + ... + 113367.

It is an arithmetic number, because the mean of its divisors is an integer number (2153061).

Almost surely, 2^11105213 is an apocalyptic number.

It is an amenable number.

11105213 is a deficient number, since it is larger than the sum of its proper divisors (1813153).

11105213 is an equidigital number, since it uses as much as digits as its factorization.

11105213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226651 (or 226644 counting only the distinct ones).

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

The square root of 11105213 is about 3332.4484992270. The cubic root of 11105213 is about 223.1048258064.

Adding to 11105213 its reverse (31250111), we get a palindrome (42355324).

The spelling of 11105213 in words is "eleven million, one hundred five thousand, two hundred thirteen".