12003232121 has 8 divisors (see below), whose sum is σ = 12727210080. Its totient is φ = 11288477088.

The previous prime is 12003232093. The next prime is 12003232127. The reversal of 12003232121 is 12123230021.

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 12003232121 - 2⁶ = 12003232057 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 12003232121.

It is not an unprimeable number, because it can be changed into a prime (12003232127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2303051 + ... + 2308256.

It is an arithmetic number, because the mean of its divisors is an integer number (1590901260).

Almost surely, 2^12003232121 is an apocalyptic number.

It is an amenable number.

12003232121 is a deficient number, since it is larger than the sum of its proper divisors (723977959).

12003232121 is a wasteful number, since it uses less digits than its factorization.

12003232121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4611463.

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

Adding to 12003232121 its reverse (12123230021), we get a palindrome (24126462142).

The spelling of 12003232121 in words is "twelve billion, three million, two hundred thirty-two thousand, one hundred twenty-one".