21301233030 has 96 divisors (see below), whose sum is σ = 69049214208. Its totient is φ = 4426228800.

The previous prime is 21301232983. The next prime is 21301233043. The reversal of 21301233030 is 3033210312.

21301233030 is a `hidden beast` number, since 2 + 1 + 301 + 2 + 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 = 21301232994 and 21301233012.

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 47 ways as a sum of consecutive naturals, for example, 1529956 + ... + 1543815.

It is an arithmetic number, because the mean of its divisors is an integer number (719262648).

Almost surely, 2^21301233030 is an apocalyptic number.

21301233030 is an abundant number, since it is smaller than the sum of its proper divisors (47747981178).

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

21301233030 is a wasteful number, since it uses less digits than its factorization.

21301233030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3073802 (or 3073799 counting only the distinct ones).

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

Adding to 21301233030 its reverse (3033210312), we get a palindrome (24334443342).

The spelling of 21301233030 in words is "twenty-one billion, three hundred one million, two hundred thirty-three thousand, thirty".