21304210012 has 12 divisors (see below), whose sum is σ = 37624408360. Its totient is φ = 10554379056.

The previous prime is 21304209973. The next prime is 21304210027. The reversal of 21304210012 is 21001240312.

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, 24430998 + ... + 24431869.

Almost surely, 2^21304210012 is an apocalyptic number.

It is an amenable number.

21304210012 is a deficient number, since it is larger than the sum of its proper divisors (16320198348).

21304210012 is a wasteful number, since it uses less digits than its factorization.

21304210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48862980 (or 48862978 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21304210012 its reverse (21001240312), we get a palindrome (42305450324).

The spelling of 21304210012 in words is "twenty-one billion, three hundred four million, two hundred ten thousand, twelve".