2121133230 has 80 divisors (see below), whose sum is σ = 5726763504. Its totient is φ = 563328000.

The previous prime is 2121133207. The next prime is 2121133247. The reversal of 2121133230 is 323311212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 198094 + ... + 208526.

Almost surely, 2^2121133230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2121133230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2863381752).

2121133230 is an abundant number, since it is smaller than the sum of its proper divisors (3605630274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121133230 is a wasteful number, since it uses less digits than its factorization.

2121133230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10703 (or 10694 counting only the distinct ones).

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

The square root of 2121133230 is about 46055.7621802093. The cubic root of 2121133230 is about 1284.8605136587.

Adding to 2121133230 its reverse (323311212), we get a palindrome (2444444442).

The spelling of 2121133230 in words is "two billion, one hundred twenty-one million, one hundred thirty-three thousand, two hundred thirty".