12033012121 has 4 divisors (see below), whose sum is σ = 12958628452. Its totient is φ = 11107395792.

The previous prime is 12033012041. The next prime is 12033012161. The reversal of 12033012121 is 12121033021.

12033012121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 4193857600 + 7839154521 = 64760^2 + 88539^2 .

It is a cyclic number.

It is not a de Polignac number, because 12033012121 - 2⁷ = 12033011993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12033012095 and 12033012104.

It is not an unprimeable number, because it can be changed into a prime (12033012161) 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 3 ways as a sum of consecutive naturals, for example, 462808146 + ... + 462808171.

It is an arithmetic number, because the mean of its divisors is an integer number (3239657113).

Almost surely, 2^12033012121 is an apocalyptic number.

It is an amenable number.

12033012121 is a deficient number, since it is larger than the sum of its proper divisors (925616331).

12033012121 is an equidigital number, since it uses as much as digits as its factorization.

12033012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925616330.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12033012121 its reverse (12121033021), we get a palindrome (24154045142).

The spelling of 12033012121 in words is "twelve billion, thirty-three million, twelve thousand, one hundred twenty-one".