2121230133 has 16 divisors (see below), whose sum is σ = 3428251200. Its totient is φ = 1285593840.

The previous prime is 2121230123. The next prime is 2121230141. The reversal of 2121230133 is 3310321212.

It is not a de Polignac number, because 2121230133 - 2¹³ = 2121221941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121230123) 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, 3570798 + ... + 3571391.

It is an arithmetic number, because the mean of its divisors is an integer number (214265700).

Almost surely, 2^2121230133 is an apocalyptic number.

It is an amenable number.

2121230133 is a deficient number, since it is larger than the sum of its proper divisors (1307021067).

2121230133 is a wasteful number, since it uses less digits than its factorization.

2121230133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7142209 (or 7142203 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2121230133 is about 46056.8141863937. The cubic root of 2121230133 is about 1284.8800794487.

Adding to 2121230133 its reverse (3310321212), we get a palindrome (5431551345).

The spelling of 2121230133 in words is "two billion, one hundred twenty-one million, two hundred thirty thousand, one hundred thirty-three".