12003230121 has 16 divisors (see below), whose sum is σ = 16140908544. Its totient is φ = 7933935744.

The previous prime is 12003230081. The next prime is 12003230143. The reversal of 12003230121 is 12103230021.

12003230121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12003230121 - 2²² = 11999035817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12003230121.

It is not an unprimeable number, because it can be changed into a prime (12003220121) 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 15 ways as a sum of consecutive naturals, for example, 621811 + ... + 640823.

It is an arithmetic number, because the mean of its divisors is an integer number (1008806784).

Almost surely, 2^12003230121 is an apocalyptic number.

It is an amenable number.

12003230121 is a deficient number, since it is larger than the sum of its proper divisors (4137678423).

12003230121 is a wasteful number, since it uses less digits than its factorization.

12003230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20800.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12003230121 its reverse (12103230021), we get a palindrome (24106460142).

The spelling of 12003230121 in words is "twelve billion, three million, two hundred thirty thousand, one hundred twenty-one".