21210300332 has 12 divisors (see below), whose sum is σ = 39973258416. Its totient is φ = 9789369360.

The previous prime is 21210300329. The next prime is 21210300367. The reversal of 21210300332 is 23300301212.

It is a self number, because there is not a number n which added to its sum of digits gives 21210300332.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203945144 + ... + 203945247.

It is an arithmetic number, because the mean of its divisors is an integer number (3331104868).

Almost surely, 2^21210300332 is an apocalyptic number.

It is an amenable number.

21210300332 is a deficient number, since it is larger than the sum of its proper divisors (18762958084).

21210300332 is a wasteful number, since it uses less digits than its factorization.

21210300332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407890408 (or 407890406 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21210300332 its reverse (23300301212), we get a palindrome (44510601544).

The spelling of 21210300332 in words is "twenty-one billion, two hundred ten million, three hundred thousand, three hundred thirty-two".