21200403230 has 16 divisors (see below), whose sum is σ = 38213229600. Its totient is φ = 8468493792.

The previous prime is 21200403221. The next prime is 21200403233. The reversal of 21200403230 is 3230400212.

It is a super-2 number, since 2×21200403230² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21200403199 and 21200403208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200403233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1450805 + ... + 1465344.

It is an arithmetic number, because the mean of its divisors is an integer number (2388326850).

Almost surely, 2^21200403230 is an apocalyptic number.

21200403230 is a deficient number, since it is larger than the sum of its proper divisors (17012826370).

21200403230 is a wasteful number, since it uses less digits than its factorization.

21200403230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916883.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21200403230 its reverse (3230400212), we get a palindrome (24430803442).

The spelling of 21200403230 in words is "twenty-one billion, two hundred million, four hundred three thousand, two hundred thirty".