21303332212 has 12 divisors (see below), whose sum is σ = 37305192736. Its totient is φ = 10644705720.

The previous prime is 21303332177. The next prime is 21303332231. The reversal of 21303332212 is 21223330312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1733208 + ... + 1745455.

Almost surely, 2^21303332212 is an apocalyptic number.

It is an amenable number.

21303332212 is a deficient number, since it is larger than the sum of its proper divisors (16001860524).

21303332212 is a wasteful number, since it uses less digits than its factorization.

21303332212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3480198 (or 3480196 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21303332212 its reverse (21223330312), we get a palindrome (42526662524).

The spelling of 21303332212 in words is "twenty-one billion, three hundred three million, three hundred thirty-two thousand, two hundred twelve".