12030123221 has 16 divisors (see below), whose sum is σ = 12689561088. Its totient is φ = 11388936000.

The previous prime is 12030123191. The next prime is 12030123229. The reversal of 12030123221 is 12232103021.

12030123221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12030123221 - 2¹⁰ = 12030122197 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 12030123221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12030123229) 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, 559571 + ... + 580671.

It is an arithmetic number, because the mean of its divisors is an integer number (793097568).

Almost surely, 2^12030123221 is an apocalyptic number.

It is an amenable number.

12030123221 is a deficient number, since it is larger than the sum of its proper divisors (659437867).

12030123221 is a wasteful number, since it uses less digits than its factorization.

12030123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21532.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12030123221 its reverse (12232103021), we get a palindrome (24262226242).

The spelling of 12030123221 in words is "twelve billion, thirty million, one hundred twenty-three thousand, two hundred twenty-one".