11128213 has 2 divisors, whose sum is σ = 11128214. Its totient is φ = 11128212.

The previous prime is 11128207. The next prime is 11128241. The reversal of 11128213 is 31282111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9998244 + 1129969 = 3162^2 + 1063^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11128213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11128913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5564106 + 5564107.

It is an arithmetic number, because the mean of its divisors is an integer number (5564107).

Almost surely, 2^11128213 is an apocalyptic number.

It is an amenable number.

11128213 is a deficient number, since it is larger than the sum of its proper divisors (1).

11128213 is an equidigital number, since it uses as much as digits as its factorization.

11128213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 19.

The square root of 11128213 is about 3335.8976303238. The cubic root of 11128213 is about 223.2587436859.

The spelling of 11128213 in words is "eleven million, one hundred twenty-eight thousand, two hundred thirteen".