21303101213 has 8 divisors (see below), whose sum is σ = 22039600800. Its totient is φ = 20566729008.

The previous prime is 21303101201. The next prime is 21303101221. The reversal of 21303101213 is 31210130312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21303101213 - 2⁸ = 21303100957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21303101191 and 21303101200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303101233) by changing a digit.

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, 414770 + ... + 463292.

It is an arithmetic number, because the mean of its divisors is an integer number (2754950100).

Almost surely, 2^21303101213 is an apocalyptic number.

It is an amenable number.

21303101213 is a deficient number, since it is larger than the sum of its proper divisors (736499587).

21303101213 is a wasteful number, since it uses less digits than its factorization.

21303101213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63691.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21303101213 its reverse (31210130312), we get a palindrome (52513231525).

The spelling of 21303101213 in words is "twenty-one billion, three hundred three million, one hundred one thousand, two hundred thirteen".