12222133220 has 96 divisors (see below), whose sum is σ = 28356241536. Its totient is φ = 4388096000.

The previous prime is 12222133219. The next prime is 12222133229. The reversal of 12222133220 is 2233122221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12222133192 and 12222133201.

It is not an unprimeable number, because it can be changed into a prime (12222133229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12509372 + ... + 12510348.

It is an arithmetic number, because the mean of its divisors is an integer number (295377516).

Almost surely, 2^12222133220 is an apocalyptic number.

12222133220 is a gapful number since it is divisible by the number (10) 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 12222133220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14178120768).

12222133220 is an abundant number, since it is smaller than the sum of its proper divisors (16134108316).

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

12222133220 is a wasteful number, since it uses less digits than its factorization.

12222133220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661 (or 1659 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12222133220 its reverse (2233122221), we get a palindrome (14455255441).

The spelling of 12222133220 in words is "twelve billion, two hundred twenty-two million, one hundred thirty-three thousand, two hundred twenty".