21200053230 has 48 divisors (see below), whose sum is σ = 55195508160. Its totient is φ = 5645617344.

The previous prime is 21200053223. The next prime is 21200053243. The reversal of 21200053230 is 3235000212.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94710 + ... + 226649.

It is an arithmetic number, because the mean of its divisors is an integer number (1149906420).

Almost surely, 2^21200053230 is an apocalyptic number.

21200053230 is an abundant number, since it is smaller than the sum of its proper divisors (33995454930).

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

21200053230 is a wasteful number, since it uses less digits than its factorization.

21200053230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322105 (or 322102 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

Adding to 21200053230 its reverse (3235000212), we get a palindrome (24435053442).

The spelling of 21200053230 in words is "twenty-one billion, two hundred million, fifty-three thousand, two hundred thirty".