21200212330 has 32 divisors (see below), whose sum is σ = 42058699200. Its totient is φ = 7629688320.

The previous prime is 21200212289. The next prime is 21200212333. The reversal of 21200212330 is 3321200212.

It is not an unprimeable number, because it can be changed into a prime (21200212333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 982780 + ... + 1004119.

It is an arithmetic number, because the mean of its divisors is an integer number (1314334350).

Almost surely, 2^21200212330 is an apocalyptic number.

21200212330 is a deficient number, since it is larger than the sum of its proper divisors (20858486870).

21200212330 is a wasteful number, since it uses less digits than its factorization.

21200212330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987014.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21200212330 its reverse (3321200212), we get a palindrome (24521412542).

The spelling of 21200212330 in words is "twenty-one billion, two hundred million, two hundred twelve thousand, three hundred thirty".