12003211021 has 8 divisors (see below), whose sum is σ = 12050064000. Its totient is φ = 11956412832.

The previous prime is 12003211019. The next prime is 12003211027. The reversal of 12003211021 is 12011230021.

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 12003211021 - 2¹ = 12003211019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12003210992 and 12003211010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12003211027) 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, 456396 + ... + 481978.

It is an arithmetic number, because the mean of its divisors is an integer number (1506258000).

Almost surely, 2^12003211021 is an apocalyptic number.

It is an amenable number.

12003211021 is a deficient number, since it is larger than the sum of its proper divisors (46852979).

12003211021 is a wasteful number, since it uses less digits than its factorization.

12003211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27395.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12003211021 its reverse (12011230021), we get a palindrome (24014441042).

The spelling of 12003211021 in words is "twelve billion, three million, two hundred eleven thousand, twenty-one".