11221110 has 24 divisors (see below), whose sum is σ = 29175120.
Its totient is φ = 2992272.
The previous prime is 11221103. The next prime is 11221123. The reversal of 11221110 is 1112211.
Adding to 11221110 its reverse (1112211), we get a palindrome (12333321).
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a junction number, because it is equal to n+sod(n) for n = 11221092 and 11221101.
It is a congruent number.
It is an unprimeable number.
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 in 11 ways as a sum of consecutive naturals, for example, 62250 + ... + 62429.
It is an arithmetic number, because the mean of its divisors is an integer number (1215630).
Almost surely, 211221110 is an apocalyptic number.
11221110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
11221110 is an abundant number, since it is smaller than the sum of its proper divisors (17954010).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11221110 is a wasteful number, since it uses less digits than its factorization.
11221110 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 124692 (or 124689 counting only the distinct ones).
The product of its (nonzero) digits is 4, while the sum is 9.
The square root of 11221110 is about 3349.7925308890.
The cubic root of 11221110 is about 223.8782687857.
The spelling of 11221110 in words is "eleven million, two hundred twenty-one thousand, one hundred ten".