12213121133 has 16 divisors (see below), whose sum is σ = 12428458560. Its totient is φ = 12000048000.

The previous prime is 12213121111. The next prime is 12213121211. The reversal of 12213121133 is 33112131221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12213121133 - 2⁶ = 12213121069 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 (12213111133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11510423 + ... + 11511483.

It is an arithmetic number, because the mean of its divisors is an integer number (776778660).

Almost surely, 2^12213121133 is an apocalyptic number.

It is an amenable number.

12213121133 is a deficient number, since it is larger than the sum of its proper divisors (215337427).

12213121133 is a wasteful number, since it uses less digits than its factorization.

12213121133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948.

The product of its digits is 216, while the sum is 20.

Adding to 12213121133 its reverse (33112131221), we get a palindrome (45325252354).

The spelling of 12213121133 in words is "twelve billion, two hundred thirteen million, one hundred twenty-one thousand, one hundred thirty-three".