12003023221 has 16 divisors (see below), whose sum is σ = 14133597184. Its totient is φ = 9978194304.

The previous prime is 12003023203. The next prime is 12003023233. The reversal of 12003023221 is 12232030021.

It is a cyclic number.

It is not a de Polignac number, because 12003023221 - 2¹³ = 12003015029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12003023195 and 12003023204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12003027221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7036 + ... + 155098.

It is an arithmetic number, because the mean of its divisors is an integer number (883349824).

Almost surely, 2^12003023221 is an apocalyptic number.

It is an amenable number.

12003023221 is a deficient number, since it is larger than the sum of its proper divisors (2130573963).

12003023221 is a wasteful number, since it uses less digits than its factorization.

12003023221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148420.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12003023221 its reverse (12232030021), we get a palindrome (24235053242).

The spelling of 12003023221 in words is "twelve billion, three million, twenty-three thousand, two hundred twenty-one".