21010300312 has 32 divisors (see below), whose sum is σ = 39612596400. Its totient is φ = 10447091200.

The previous prime is 21010300279. The next prime is 21010300331. The reversal of 21010300312 is 21300301012.

It is a junction number, because it is equal to n+sod(n) for n = 21010300292 and 21010300301.

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 7 ways as a sum of consecutive naturals, for example, 1162239 + ... + 1180177.

Almost surely, 2^21010300312 is an apocalyptic number.

It is an amenable number.

21010300312 is a deficient number, since it is larger than the sum of its proper divisors (18602296088).

21010300312 is a wasteful number, since it uses less digits than its factorization.

21010300312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18747 (or 18743 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21010300312 its reverse (21300301012), we get a palindrome (42310601324).

The spelling of 21010300312 in words is "twenty-one billion, ten million, three hundred thousand, three hundred twelve".