21211301302 has 16 divisors (see below), whose sum is σ = 33711833232. Its totient is φ = 9974886400.

The previous prime is 21211301291. The next prime is 21211301317. The reversal of 21211301302 is 20310311212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165643 + ... + 264310.

It is an arithmetic number, because the mean of its divisors is an integer number (2106989577).

Almost surely, 2^21211301302 is an apocalyptic number.

21211301302 is a deficient number, since it is larger than the sum of its proper divisors (12500531930).

21211301302 is a wasteful number, since it uses less digits than its factorization.

21211301302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431423.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21211301302 its reverse (20310311212), we get a palindrome (41521612514).

The spelling of 21211301302 in words is "twenty-one billion, two hundred eleven million, three hundred one thousand, three hundred two".