12321222030 has 192 divisors, whose sum is σ = 36601044480. Its totient is φ = 2850681600.

The previous prime is 12321222029. The next prime is 12321222077. The reversal of 12321222030 is 3022212321.

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 = 12321221994 and 12321222012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2910015 + ... + 2914245.

It is an arithmetic number, because the mean of its divisors is an integer number (190630440).

Almost surely, 2^12321222030 is an apocalyptic number.

12321222030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12321222030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18300522240).

12321222030 is an abundant number, since it is smaller than the sum of its proper divisors (24279822450).

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

12321222030 is a wasteful number, since it uses less digits than its factorization.

12321222030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4407 (or 4404 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12321222030 its reverse (3022212321), we get a palindrome (15343434351).

The spelling of 12321222030 in words is "twelve billion, three hundred twenty-one million, two hundred twenty-two thousand, thirty".