12204300021 has 4 divisors (see below), whose sum is σ = 16272400032. Its totient is φ = 8136200012.

The previous prime is 12204299971. The next prime is 12204300079. The reversal of 12204300021 is 12000340221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12204300021 - 2⁷ = 12204299893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12204300421) 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 3 ways as a sum of consecutive naturals, for example, 2034050001 + ... + 2034050006.

It is an arithmetic number, because the mean of its divisors is an integer number (4068100008).

Almost surely, 2^12204300021 is an apocalyptic number.

It is an amenable number.

12204300021 is a deficient number, since it is larger than the sum of its proper divisors (4068100011).

12204300021 is an equidigital number, since it uses as much as digits as its factorization.

12204300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4068100010.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 12204300021 its reverse (12000340221), we get a palindrome (24204640242).

The spelling of 12204300021 in words is "twelve billion, two hundred four million, three hundred thousand, twenty-one".