11321222388 has 48 divisors (see below), whose sum is σ = 30202368000. Its totient is φ = 3233301984.

The previous prime is 11321222387. The next prime is 11321222389. The reversal of 11321222388 is 88322212311.

It is an interprime number because it is at equal distance from previous prime (11321222387) and next prime (11321222389).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321222387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187113 + ... + 240111.

It is an arithmetic number, because the mean of its divisors is an integer number (629216000).

Almost surely, 2^11321222388 is an apocalyptic number.

It is an amenable number.

11321222388 is an abundant number, since it is smaller than the sum of its proper divisors (18881145612).

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

11321222388 is a wasteful number, since it uses less digits than its factorization.

11321222388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55556 (or 55554 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

Adding to 11321222388 its reverse (88322212311), we get a palindrome (99643434699).

It can be divided in two parts, 113212223 and 88, that added together give a palindrome (113212311).

The spelling of 11321222388 in words is "eleven billion, three hundred twenty-one million, two hundred twenty-two thousand, three hundred eighty-eight".