12003222121 has 8 divisors (see below), whose sum is σ = 13097561184. Its totient is φ = 10909405920.

The previous prime is 12003222107. The next prime is 12003222139. The reversal of 12003222121 is 12122230021.

It is a happy number.

12003222121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12003222121 - 2⁹ = 12003221609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12003222095 and 12003222104.

It is not an unprimeable number, because it can be changed into a prime (12003222421) 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 7 ways as a sum of consecutive naturals, for example, 81916 + ... + 175261.

It is an arithmetic number, because the mean of its divisors is an integer number (1637195148).

Almost surely, 2^12003222121 is an apocalyptic number.

12003222121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12003222121 is a deficient number, since it is larger than the sum of its proper divisors (1094339063).

12003222121 is a wasteful number, since it uses less digits than its factorization.

12003222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261431.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12003222121 its reverse (12122230021), we get a palindrome (24125452142).

The spelling of 12003222121 in words is "twelve billion, three million, two hundred twenty-two thousand, one hundred twenty-one".