21302133030 has 32 divisors (see below), whose sum is σ = 56805688800. Its totient is φ = 5680568736.

The previous prime is 21302133007. The next prime is 21302133091. The reversal of 21302133030 is 3033120312.

21302133030 is a `hidden beast` number, since 2 + 1 + 302 + 1 + 330 + 30 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 21302132994 and 21302133012.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 39448125 + ... + 39448664.

It is an arithmetic number, because the mean of its divisors is an integer number (1775177775).

Almost surely, 2^21302133030 is an apocalyptic number.

21302133030 is an abundant number, since it is smaller than the sum of its proper divisors (35503555770).

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

21302133030 is a wasteful number, since it uses less digits than its factorization.

21302133030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78896805 (or 78896799 counting only the distinct ones).

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

Adding to 21302133030 its reverse (3033120312), we get a palindrome (24335253342).

It can be divided in two parts, 213021 and 33030, that added together give a triangular number (246051 = T₇₀₁).

The spelling of 21302133030 in words is "twenty-one billion, three hundred two million, one hundred thirty-three thousand, thirty".