11100222 has 48 divisors (see below), whose sum is σ = 28240992. Its totient is φ = 3084480.

The previous prime is 11100179. The next prime is 11100223. The reversal of 11100222 is 22200111.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100223) 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 23 ways as a sum of consecutive naturals, for example, 3472 + ... + 5852.

It is an arithmetic number, because the mean of its divisors is an integer number (588354).

Almost surely, 2^11100222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11100222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14120496).

11100222 is an abundant number, since it is smaller than the sum of its proper divisors (17140770).

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

11100222 is a wasteful number, since it uses less digits than its factorization.

11100222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433 (or 2430 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 11100222 is about 3331.6995662875. The cubic root of 11100222 is about 223.0713975704.

Adding to 11100222 its reverse (22200111), we get a palindrome (33300333).

The spelling of 11100222 in words is "eleven million, one hundred thousand, two hundred twenty-two".