12003221001 has 16 divisors (see below), whose sum is σ = 16054585344. Its totient is φ = 7977035664.

The previous prime is 12003220981. The next prime is 12003221003. The reversal of 12003221001 is 10012230021.

12003221001 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 12003221001 - 2¹⁴ = 12003204617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12003221003) 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, 1813440 + ... + 1820046.

It is an arithmetic number, because the mean of its divisors is an integer number (1003411584).

Almost surely, 2^12003221001 is an apocalyptic number.

It is an amenable number.

12003221001 is a deficient number, since it is larger than the sum of its proper divisors (4051364343).

12003221001 is a wasteful number, since it uses less digits than its factorization.

12003221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8420.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 12003221001 its reverse (10012230021), we get a palindrome (22015451022).

The spelling of 12003221001 in words is "twelve billion, three million, two hundred twenty-one thousand, one".