11021222232 has 192 divisors, whose sum is σ = 32751264000. Its totient is φ = 3462528384.

The previous prime is 11021222209. The next prime is 11021222237. The reversal of 11021222232 is 23222212011.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021222237) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 8457693 + ... + 8458995.

It is an arithmetic number, because the mean of its divisors is an integer number (170579500).

Almost surely, 2^11021222232 is an apocalyptic number.

11021222232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11021222232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16375632000).

11021222232 is an abundant number, since it is smaller than the sum of its proper divisors (21730041768).

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

11021222232 is a wasteful number, since it uses less digits than its factorization.

11021222232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572 (or 1556 counting only the distinct ones).

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

Adding to 11021222232 its reverse (23222212011), we get a palindrome (34243434243).

The spelling of 11021222232 in words is "eleven billion, twenty-one million, two hundred twenty-two thousand, two hundred thirty-two".