21300120203323 has 16 divisors (see below), whose sum is σ = 23430144648960. Its totient is φ = 19243253824416.

The previous prime is 21300120203321. The next prime is 21300120203359. The reversal of 21300120203323 is 32330202100312.

It is a cyclic number.

It is not a de Polignac number, because 21300120203323 - 2¹ = 21300120203321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21300120203294 and 21300120203303.

It is not an unprimeable number, because it can be changed into a prime (21300120203321) 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, 60994815 + ... + 61343032.

It is an arithmetic number, because the mean of its divisors is an integer number (1464384040560).

Almost surely, 2^{21300120203323} is an apocalyptic number.

21300120203323 is a deficient number, since it is larger than the sum of its proper divisors (2130024445637).

21300120203323 is a wasteful number, since it uses less digits than its factorization.

21300120203323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122338146.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21300120203323 its reverse (32330202100312), we get a palindrome (53630322303635).

The spelling of 21300120203323 in words is "twenty-one trillion, three hundred billion, one hundred twenty million, two hundred three thousand, three hundred twenty-three".