21302121013323 has 16 divisors (see below), whose sum is σ = 28747401501600. Its totient is φ = 14029409940480.

The previous prime is 21302121013279. The next prime is 21302121013331. The reversal of 21302121013323 is 32331012120312.

It is not a de Polignac number, because 21302121013323 - 2⁸ = 21302121013067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21302121013293 and 21302121013302.

It is not an unprimeable number, because it can be changed into a prime (21302121013333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35032138 + ... + 35635023.

It is an arithmetic number, because the mean of its divisors is an integer number (1796712593850).

Almost surely, 2^{21302121013323} is an apocalyptic number.

21302121013323 is a deficient number, since it is larger than the sum of its proper divisors (7445280488277).

21302121013323 is a wasteful number, since it uses less digits than its factorization.

21302121013323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70668382.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21302121013323 its reverse (32331012120312), we get a palindrome (53633133133635).

The spelling of 21302121013323 in words is "twenty-one trillion, three hundred two billion, one hundred twenty-one million, thirteen thousand, three hundred twenty-three".