2121221133 has 12 divisors (see below), whose sum is σ = 3066105120. Its totient is φ = 1413169416.

The previous prime is 2121221131. The next prime is 2121221143. The reversal of 2121221133 is 3311221212.

It is not a de Polignac number, because 2121221133 - 2¹ = 2121221131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121221131) 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 11 ways as a sum of consecutive naturals, for example, 67641 + ... + 93902.

It is an arithmetic number, because the mean of its divisors is an integer number (255508760).

Almost surely, 2^2121221133 is an apocalyptic number.

It is an amenable number.

2121221133 is a deficient number, since it is larger than the sum of its proper divisors (944883987).

2121221133 is a wasteful number, since it uses less digits than its factorization.

2121221133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163008 (or 163005 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 2121221133 is about 46056.7164808782. The cubic root of 2121221133 is about 1284.8782622741.

Adding to 2121221133 its reverse (3311221212), we get a palindrome (5432442345).

The spelling of 2121221133 in words is "two billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred thirty-three".