12221006204 has 24 divisors (see below), whose sum is σ = 23713492656. Its totient is φ = 5463936000.

The previous prime is 12221006201. The next prime is 12221006249. The reversal of 12221006204 is 40260012221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221006201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2273957 + ... + 2279324.

It is an arithmetic number, because the mean of its divisors is an integer number (988062194).

Almost surely, 2^12221006204 is an apocalyptic number.

It is an amenable number.

12221006204 is a deficient number, since it is larger than the sum of its proper divisors (11492486452).

12221006204 is a wasteful number, since it uses less digits than its factorization.

12221006204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4553357 (or 4553355 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12221006204 its reverse (40260012221), we get a palindrome (52481018425).

The spelling of 12221006204 in words is "twelve billion, two hundred twenty-one million, six thousand, two hundred four".