12232203121 has 4 divisors (see below), whose sum is σ = 12404487744. Its totient is φ = 12059918500.

The previous prime is 12232203119. The next prime is 12232203187. The reversal of 12232203121 is 12130223221.

12232203121 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: 12130223221 = 48437 ⋅250433.

It is a cyclic number.

It is not a de Polignac number, because 12232203121 - 2¹ = 12232203119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12232200121) 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, 86142205 + ... + 86142346.

It is an arithmetic number, because the mean of its divisors is an integer number (3101121936).

Almost surely, 2^12232203121 is an apocalyptic number.

It is an amenable number.

12232203121 is a deficient number, since it is larger than the sum of its proper divisors (172284623).

12232203121 is an equidigital number, since it uses as much as digits as its factorization.

12232203121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172284622.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12232203121 its reverse (12130223221), we get a palindrome (24362426342).

The spelling of 12232203121 in words is "twelve billion, two hundred thirty-two million, two hundred three thousand, one hundred twenty-one".