12204240221 has 8 divisors (see below), whose sum is σ = 12294755424. Its totient is φ = 12114058000.

The previous prime is 12204240203. The next prime is 12204240253.

12204240221 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12204240221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12204240193 and 12204240202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12204240421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9431 + ... + 156516.

It is an arithmetic number, because the mean of its divisors is an integer number (1536844428).

Almost surely, 2^12204240221 is an apocalyptic number.

It is an amenable number.

12204240221 is a deficient number, since it is larger than the sum of its proper divisors (90515203).

12204240221 is a wasteful number, since it uses less digits than its factorization.

12204240221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166491.

The product of its (nonzero) digits is 512, while the sum is 20.

The spelling of 12204240221 in words is "twelve billion, two hundred four million, two hundred forty thousand, two hundred twenty-one".