12222220332 has 144 divisors (see below), whose sum is σ = 35734874112. Its totient is φ = 3232373760.

The previous prime is 12222220291. The next prime is 12222220337. The reversal of 12222220332 is 23302222221.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 12222220299 and 12222220308.

It is not an unprimeable number, because it can be changed into a prime (12222220337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 404668 + ... + 433820.

It is an arithmetic number, because the mean of its divisors is an integer number (248158848).

Almost surely, 2^12222220332 is an apocalyptic number.

12222220332 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 12222220332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17867437056).

12222220332 is an abundant number, since it is smaller than the sum of its proper divisors (23512653780).

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

12222220332 is a wasteful number, since it uses less digits than its factorization.

12222220332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29228 (or 29219 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 12222220332 its reverse (23302222221), we get a palindrome (35524442553).

The spelling of 12222220332 in words is "twelve billion, two hundred twenty-two million, two hundred twenty thousand, three hundred thirty-two".