21301210202323 has 16 divisors (see below), whose sum is σ = 21566312064000. Its totient is φ = 21037898175840.

The previous prime is 21301210202243. The next prime is 21301210202351. The reversal of 21301210202323 is 32320201210312.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21301210202323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21301210202294 and 21301210202303.

It is not an unprimeable number, because it can be changed into a prime (21301210202353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22950328 + ... + 23860426.

It is an arithmetic number, because the mean of its divisors is an integer number (1347894504000).

Almost surely, 2^{21301210202323} is an apocalyptic number.

21301210202323 is a deficient number, since it is larger than the sum of its proper divisors (265101861677).

21301210202323 is a wasteful number, since it uses less digits than its factorization.

21301210202323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911082.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21301210202323 its reverse (32320201210312), we get a palindrome (53621411412635).

The spelling of 21301210202323 in words is "twenty-one trillion, three hundred one billion, two hundred ten million, two hundred two thousand, three hundred twenty-three".