21344212341 has 8 divisors (see below), whose sum is σ = 31621055360. Its totient is φ = 14229474876.

The previous prime is 21344212327. The next prime is 21344212361. The reversal of 21344212341 is 14321244312.

21344212341 is a `hidden beast` number, since 2 + 1 + 3 + 4 + 421 + 234 + 1 = 666.

It is not a de Polignac number, because 21344212341 - 2⁶ = 21344212277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 790526383 = 21344212341 / (2 + 1 + 3 + 4 + 4 + 2 + 1 + 2 + 3 + 4 + 1).

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 (21344212361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395263165 + ... + 395263218.

It is an arithmetic number, because the mean of its divisors is an integer number (3952631920).

Almost surely, 2^21344212341 is an apocalyptic number.

It is an amenable number.

21344212341 is a deficient number, since it is larger than the sum of its proper divisors (10276843019).

21344212341 is an equidigital number, since it uses as much as digits as its factorization.

21344212341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790526392 (or 790526386 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 21344212341 its reverse (14321244312), we get a palindrome (35665456653).

The spelling of 21344212341 in words is "twenty-one billion, three hundred forty-four million, two hundred twelve thousand, three hundred forty-one".