12003121133 has 4 divisors (see below), whose sum is σ = 12709187100. Its totient is φ = 11297055168.

The previous prime is 12003121127. The next prime is 12003121177. The reversal of 12003121133 is 33112130021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7701466564 + 4301654569 = 87758^2 + 65587^2 .

It is a cyclic number.

It is not a de Polignac number, because 12003121133 - 2¹⁰ = 12003120109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 706065949 = 12003121133 / (1 + 2 + 0 + 0 + 3 + 1 + 2 + 1 + 1 + 3 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12003121183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353032958 + ... + 353032991.

It is an arithmetic number, because the mean of its divisors is an integer number (3177296775).

Almost surely, 2^12003121133 is an apocalyptic number.

It is an amenable number.

12003121133 is a deficient number, since it is larger than the sum of its proper divisors (706065967).

12003121133 is an equidigital number, since it uses as much as digits as its factorization.

12003121133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706065966.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 12003121133 its reverse (33112130021), we get a palindrome (45115251154).

The spelling of 12003121133 in words is "twelve billion, three million, one hundred twenty-one thousand, one hundred thirty-three".