12012221220133 has 4 divisors (see below), whose sum is σ = 12022657555968. Its totient is φ = 12001784884300.

The previous prime is 12012221220121. The next prime is 12012221220149. The reversal of 12012221220133 is 33102212221021.

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 a de Polignac number, because none of the positive numbers 2^k-12012221220133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012221220833) 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, 5218166191 + ... + 5218168492.

It is an arithmetic number, because the mean of its divisors is an integer number (3005664388992).

Almost surely, 2^{12012221220133} is an apocalyptic number.

It is an amenable number.

12012221220133 is a deficient number, since it is larger than the sum of its proper divisors (10436335835).

12012221220133 is a wasteful number, since it uses less digits than its factorization.

12012221220133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10436335834.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 12012221220133 its reverse (33102212221021), we get a palindrome (45114433441154).

The spelling of 12012221220133 in words is "twelve trillion, twelve billion, two hundred twenty-one million, two hundred twenty thousand, one hundred thirty-three".