11221056 has 252 divisors, whose sum is σ = 42159936. Its totient is φ = 2787840.

The previous prime is 11221051. The next prime is 11221061. The reversal of 11221056 is 65012211.

It is an interprime number because it is at equal distance from previous prime (11221051) and next prime (11221061).

It is a tau number, because it is divible by the number of its divisors (252).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221051) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 487861 + ... + 487883.

Almost surely, 2^11221056 is an apocalyptic number.

11221056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11221056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21079968).

11221056 is an abundant number, since it is smaller than the sum of its proper divisors (30938880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11221056 is a wasteful number, since it uses less digits than its factorization.

11221056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70 (or 46 counting only the distinct ones).

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

The square root of 11221056 is about 3349.7844706787. The cubic root of 11221056 is about 223.8779096577.

Adding to 11221056 its reverse (65012211), we get a palindrome (76233267).

The spelling of 11221056 in words is "eleven million, two hundred twenty-one thousand, fifty-six".