12003233331221 has 4 divisors (see below), whose sum is σ = 13094436361344. Its totient is φ = 10912030301100.

The previous prime is 12003233331203. The next prime is 12003233331223. The reversal of 12003233331221 is 12213333230021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12003233331221 - 2⁶ = 12003233331157 is a prime.

It is a super-2 number, since 2×12003233331221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12003233331223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545601515045 + ... + 545601515066.

It is an arithmetic number, because the mean of its divisors is an integer number (3273609090336).

Almost surely, 2^{12003233331221} is an apocalyptic number.

12003233331221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12003233331221 is a deficient number, since it is larger than the sum of its proper divisors (1091203030123).

12003233331221 is a wasteful number, since it uses less digits than its factorization.

12003233331221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091203030122.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 12003233331221 its reverse (12213333230021), we get a palindrome (24216566561242).

The spelling of 12003233331221 in words is "twelve trillion, three billion, two hundred thirty-three million, three hundred thirty-one thousand, two hundred twenty-one".