11222113220 has 24 divisors (see below), whose sum is σ = 23570170008.
Its totient is φ = 4488134400.
The previous prime is 11222113213. The next prime is 11222113223. The reversal of 11222113220 is 2231122211.
It can be written as a sum of positive squares in 4 ways, for example, as 5752919104 + 5469194116 = 75848^2 + 73954^2
It is not an unprimeable number, because it can be changed into a prime (11222113223) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95810 + ... + 177830.
It is an arithmetic number, because the mean of its divisors is an integer number (982090417).
Almost surely, 211222113220 is an apocalyptic number.
11222113220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
11222113220 is an abundant number, since it is smaller than the sum of its proper divisors (12348056788).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11222113220 is a wasteful number, since it uses less digits than its factorization.
11222113220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 88871 (or 88869 counting only the distinct ones).
The product of its (nonzero) digits is 96, while the sum is 17.
Adding to 11222113220 its reverse (2231122211), we get a palindrome (13453235431).
The spelling of 11222113220 in words is "eleven billion, two hundred twenty-two million, one hundred thirteen thousand, two hundred twenty".