11056221 has 24 divisors (see below), whose sum is σ = 18027360. Its totient is φ = 6468000.

The previous prime is 11056217. The next prime is 11056237. The reversal of 11056221 is 12265011.

11056221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11056221 - 2² = 11056217 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11056194 and 11056203.

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 polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 946 + ... + 4796.

It is an arithmetic number, because the mean of its divisors is an integer number (751140).

Almost surely, 2^11056221 is an apocalyptic number.

11056221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11056221 is a deficient number, since it is larger than the sum of its proper divisors (6971139).

11056221 is a wasteful number, since it uses less digits than its factorization.

11056221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3897 (or 3894 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 11056221 is about 3325.0896228523. The cubic root of 11056221 is about 222.7762574526.

The spelling of 11056221 in words is "eleven million, fifty-six thousand, two hundred twenty-one".