11121222 has 16 divisors (see below), whose sum is σ = 25420032.
Its totient is φ = 3177480.
The previous prime is 11121217. The next prime is 11121223. The reversal of 11121222 is 22212111.
It is a nude number because it is divisible by every one of its digits.
It is a junction number, because it is equal to n+sod(n) for n = 11121198 and 11121207.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (11121223) 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 7 ways as a sum of consecutive naturals, for example, 132354 + ... + 132437.
It is an arithmetic number, because the mean of its divisors is an integer number (1588752).
Almost surely, 211121222 is an apocalyptic number.
11121222 is an abundant number, since it is smaller than the sum of its proper divisors (14298810).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11121222 is a wasteful number, since it uses less digits than its factorization.
11121222 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 264803.
The product of its digits is 16, while the sum is 12.
The square root of 11121222 is about 3334.8496217971.
The cubic root of 11121222 is about 223.2119817953.
Adding to 11121222 its reverse (22212111), we get a palindrome (33333333).
The spelling of 11121222 in words is "eleven million, one hundred twenty-one thousand, two hundred twenty-two".