21303102213 has 24 divisors (see below), whose sum is σ = 30856425600. Its totient is φ = 14162770944.

The previous prime is 21303102181. The next prime is 21303102221. The reversal of 21303102213 is 31220130312.

21303102213 is a `hidden beast` number, since 2 + 130 + 310 + 221 + 3 = 666.

It is not a de Polignac number, because 21303102213 - 2⁵ = 21303102181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21303102263) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 6160581 + ... + 6164037.

It is an arithmetic number, because the mean of its divisors is an integer number (1285684400).

Almost surely, 2^21303102213 is an apocalyptic number.

It is an amenable number.

21303102213 is a deficient number, since it is larger than the sum of its proper divisors (9553323387).

21303102213 is a wasteful number, since it uses less digits than its factorization.

21303102213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5161 (or 5158 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21303102213 its reverse (31220130312), we get a palindrome (52523232525).

The spelling of 21303102213 in words is "twenty-one billion, three hundred three million, one hundred two thousand, two hundred thirteen".