21303201220323 has 64 divisors (see below), whose sum is σ = 31913449293312. Its totient is φ = 12530852167680.

The previous prime is 21303201220313. The next prime is 21303201220337. The reversal of 21303201220323 is 32302210230312.

It is not a de Polignac number, because 21303201220323 - 2¹⁰ = 21303201219299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21303201220293 and 21303201220302.

It is not an unprimeable number, because it can be changed into a prime (21303201220303) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 153747811 + ... + 153886307.

It is an arithmetic number, because the mean of its divisors is an integer number (498647645208).

Almost surely, 2^{21303201220323} is an apocalyptic number.

21303201220323 is a deficient number, since it is larger than the sum of its proper divisors (10610248072989).

21303201220323 is a wasteful number, since it uses less digits than its factorization.

21303201220323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139604.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21303201220323 its reverse (32302210230312), we get a palindrome (53605411450635).

The spelling of 21303201220323 in words is "twenty-one trillion, three hundred three billion, two hundred one million, two hundred twenty thousand, three hundred twenty-three".