11056213 has 6 divisors (see below), whose sum is σ = 12861366. Its totient is φ = 9476712.

The previous prime is 11056211. The next prime is 11056217. The reversal of 11056213 is 31265011.

11056213 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11009124 + 47089 = 3318^2 + 217^2 .

It is not a de Polignac number, because 11056213 - 2¹ = 11056211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11056211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112770 + ... + 112867.

It is an arithmetic number, because the mean of its divisors is an integer number (2143561).

Almost surely, 2^11056213 is an apocalyptic number.

It is an amenable number.

11056213 is a deficient number, since it is larger than the sum of its proper divisors (1805153).

11056213 is an equidigital number, since it uses as much as digits as its factorization.

11056213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225651 (or 225644 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 11056213 is about 3325.0884198770. The cubic root of 11056213 is about 222.7762037208.

It can be divided in two parts, 1105 and 6213, that multiplied together give a triangular number (6865365 = T₃₇₀₅).

The spelling of 11056213 in words is "eleven million, fifty-six thousand, two hundred thirteen".