21302112341 has 4 divisors (see below), whose sum is σ = 21312878400. Its totient is φ = 21291346284.

The previous prime is 21302112329. The next prime is 21302112347. The reversal of 21302112341 is 14321120312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21302112341 - 2⁶ = 21302112277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302112347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5380061 + ... + 5384018.

It is an arithmetic number, because the mean of its divisors is an integer number (5328219600).

Almost surely, 2^21302112341 is an apocalyptic number.

It is an amenable number.

21302112341 is a deficient number, since it is larger than the sum of its proper divisors (10766059).

21302112341 is a wasteful number, since it uses less digits than its factorization.

21302112341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10766058.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21302112341 its reverse (14321120312), we get a palindrome (35623232653).

The spelling of 21302112341 in words is "twenty-one billion, three hundred two million, one hundred twelve thousand, three hundred forty-one".