21130033230 has 48 divisors (see below), whose sum is σ = 55690680240. Its totient is φ = 5557486464.

The previous prime is 21130033229. The next prime is 21130033271. The reversal of 21130033230 is 3233003112.

21130033230 is a `hidden beast` number, since 2 + 1 + 1 + 300 + 332 + 30 = 666.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1601500 + ... + 1614639.

It is an arithmetic number, because the mean of its divisors is an integer number (1160222505).

Almost surely, 2^21130033230 is an apocalyptic number.

21130033230 is an abundant number, since it is smaller than the sum of its proper divisors (34560647010).

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

21130033230 is a wasteful number, since it uses less digits than its factorization.

21130033230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216225 (or 3216222 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 21130033230 its reverse (3233003112), we get a palindrome (24363036342).

The spelling of 21130033230 in words is "twenty-one billion, one hundred thirty million, thirty-three thousand, two hundred thirty".