12242203021 has 4 divisors (see below), whose sum is σ = 12251776000. Its totient is φ = 12232630044.

The previous prime is 12242203019. The next prime is 12242203069. The reversal of 12242203021 is 12030224221.

12242203021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12030224221 = 23 ⋅523053227.

It is a cyclic number.

It is not a de Polignac number, because 12242203021 - 2¹ = 12242203019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12242203021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12242203121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4784571 + ... + 4787128.

It is an arithmetic number, because the mean of its divisors is an integer number (3062944000).

Almost surely, 2^12242203021 is an apocalyptic number.

It is an amenable number.

12242203021 is a deficient number, since it is larger than the sum of its proper divisors (9572979).

12242203021 is an equidigital number, since it uses as much as digits as its factorization.

12242203021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9572978.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12242203021 its reverse (12030224221), we get a palindrome (24272427242).

The spelling of 12242203021 in words is "twelve billion, two hundred forty-two million, two hundred three thousand, twenty-one".