11321220222 has 96 divisors (see below), whose sum is σ = 27031560192. Its totient is φ = 3402603072.

The previous prime is 11321220221. The next prime is 11321220223. The reversal of 11321220222 is 22202212311.

11321220222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11321220221) and next prime (11321220223).

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

It is a junction number, because it is equal to n+sod(n) for n = 11321220195 and 11321220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321220221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10414563 + ... + 10415649.

It is an arithmetic number, because the mean of its divisors is an integer number (281578752).

Almost surely, 2^11321220222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11321220222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13515780096).

11321220222 is an abundant number, since it is smaller than the sum of its proper divisors (15710339970).

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

11321220222 is a wasteful number, since it uses less digits than its factorization.

11321220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102 (or 2099 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 11321220222 its reverse (22202212311), we get a palindrome (33523432533).

The spelling of 11321220222 in words is "eleven billion, three hundred twenty-one million, two hundred twenty thousand, two hundred twenty-two".