21214036504204 has 12 divisors (see below), whose sum is σ = 37205094392928. Its totient is φ = 10584009534800.

The previous prime is 21214036504109. The next prime is 21214036504253. The reversal of 21214036504204 is 40240563041212.

It is a self number, because there is not a number n which added to its sum of digits gives 21214036504204.

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, 5752177252 + ... + 5752180939.

It is an arithmetic number, because the mean of its divisors is an integer number (3100424532744).

Almost surely, 2^{21214036504204} is an apocalyptic number.

It is an amenable number.

21214036504204 is a deficient number, since it is larger than the sum of its proper divisors (15991057888724).

21214036504204 is a wasteful number, since it uses less digits than its factorization.

21214036504204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11504358656 (or 11504358654 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 21214036504204 its reverse (40240563041212), we get a palindrome (61454599545416).

The spelling of 21214036504204 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, five hundred four thousand, two hundred four".