21202303042736 has 20 divisors (see below), whose sum is σ = 41079860488512. Its totient is φ = 10601048723136.

The previous prime is 21202303042729. The next prime is 21202303042763. The reversal of 21202303042736 is 63724030320212.

It is a junction number, because it is equal to n+sod(n) for n = 21202303042696 and 21202303042705.

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, 4709435 + ... + 8036378.

Almost surely, 2^{21202303042736} is an apocalyptic number.

It is an amenable number.

21202303042736 is a deficient number, since it is larger than the sum of its proper divisors (19877557445776).

21202303042736 is a wasteful number, since it uses less digits than its factorization.

21202303042736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12849788 (or 12849782 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 35.

Adding to 21202303042736 its reverse (63724030320212), we get a palindrome (84926333362948).

The spelling of 21202303042736 in words is "twenty-one trillion, two hundred two billion, three hundred three million, forty-two thousand, seven hundred thirty-six".