21130663361336 has 16 divisors (see below), whose sum is σ = 40986200485800. Its totient is φ = 10201009898464.

The previous prime is 21130663361209. The next prime is 21130663361341. The reversal of 21130663361336 is 63316336603112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45540222530 + ... + 45540222993.

Almost surely, 2^{21130663361336} is an apocalyptic number.

It is an amenable number.

21130663361336 is a deficient number, since it is larger than the sum of its proper divisors (19855537124464).

21130663361336 is a wasteful number, since it uses less digits than its factorization.

21130663361336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91080445558 (or 91080445554 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 44.

Adding to 21130663361336 its reverse (63316336603112), we get a palindrome (84446999964448).

The spelling of 21130663361336 in words is "twenty-one trillion, one hundred thirty billion, six hundred sixty-three million, three hundred sixty-one thousand, three hundred thirty-six".