12211200324 has 72 divisors (see below), whose sum is σ = 31421295360. Its totient is φ = 3997873152.

The previous prime is 12211200299. The next prime is 12211200347. The reversal of 12211200324 is 42300211221.

It is a happy number.

12211200324 is a `hidden beast` number, since 1 + 221 + 120 + 0 + 324 = 666.

It is a super-2 number, since 2×12211200324² (a number of 21 digits) contains 22 as substring.

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 = 12211200297 and 12211200306.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 537769 + ... + 560015.

It is an arithmetic number, because the mean of its divisors is an integer number (436406880).

Almost surely, 2^12211200324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12211200324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15710647680).

12211200324 is an abundant number, since it is smaller than the sum of its proper divisors (19210095036).

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

12211200324 is a wasteful number, since it uses less digits than its factorization.

12211200324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22529 (or 22524 counting only the distinct ones).

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

Adding to 12211200324 its reverse (42300211221), we get a palindrome (54511411545).

The spelling of 12211200324 in words is "twelve billion, two hundred eleven million, two hundred thousand, three hundred twenty-four".