11122213 has 4 divisors (see below), whose sum is σ = 11130220. Its totient is φ = 11114208.

The previous prime is 11122187. The next prime is 11122217. The reversal of 11122213 is 31222111.

11122213 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 brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31222111 = 19 ⋅1643269.

It can be written as a sum of positive squares in 2 ways, for example, as 9529569 + 1592644 = 3087^2 + 1262^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11122213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11122193 and 11122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122217) 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, 1320 + ... + 4897.

It is an arithmetic number, because the mean of its divisors is an integer number (2782555).

Almost surely, 2^11122213 is an apocalyptic number.

It is an amenable number.

11122213 is a deficient number, since it is larger than the sum of its proper divisors (8007).

11122213 is an equidigital number, since it uses as much as digits as its factorization.

11122213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8006.

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

The square root of 11122213 is about 3334.9982008991. The cubic root of 11122213 is about 223.2186116574.

Adding to 11122213 its reverse (31222111), we get a palindrome (42344324).

The spelling of 11122213 in words is "eleven million, one hundred twenty-two thousand, two hundred thirteen".