21200334343 has 8 divisors (see below), whose sum is σ = 21916279296. Its totient is φ = 20486393400.

The previous prime is 21200334307. The next prime is 21200334361. The reversal of 21200334343 is 34343300212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-21200334343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200334373) 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, 479473 + ... + 521818.

It is an arithmetic number, because the mean of its divisors is an integer number (2739534912).

Almost surely, 2^21200334343 is an apocalyptic number.

21200334343 is a deficient number, since it is larger than the sum of its proper divisors (715944953).

21200334343 is a wasteful number, since it uses less digits than its factorization.

21200334343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002005.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 21200334343 its reverse (34343300212), we get a palindrome (55543634555).

The spelling of 21200334343 in words is "twenty-one billion, two hundred million, three hundred thirty-four thousand, three hundred forty-three".