12204334221 has 64 divisors (see below), whose sum is σ = 18496304640. Its totient is φ = 7116595200.

The previous prime is 12204334213. The next prime is 12204334237. The reversal of 12204334221 is 12243340221.

It is a happy number.

It is not a de Polignac number, because 12204334221 - 2³ = 12204334213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12204334191 and 12204334200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12204334271) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6775521 + ... + 6777321.

It is an arithmetic number, because the mean of its divisors is an integer number (289004760).

Almost surely, 2^12204334221 is an apocalyptic number.

It is an amenable number.

12204334221 is a deficient number, since it is larger than the sum of its proper divisors (6291970419).

12204334221 is a wasteful number, since it uses less digits than its factorization.

12204334221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 12204334221 its reverse (12243340221), we get a palindrome (24447674442).

The spelling of 12204334221 in words is "twelve billion, two hundred four million, three hundred thirty-four thousand, two hundred twenty-one".