21024411343 has 16 divisors (see below), whose sum is σ = 25015870656. Its totient is φ = 17471393280.

The previous prime is 21024411313. The next prime is 21024411391. The reversal of 21024411343 is 34311442012.

It is a cyclic number.

It is not a de Polignac number, because 21024411343 - 2²⁵ = 20990856911 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 (21024411313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2063028 + ... + 2073193.

It is an arithmetic number, because the mean of its divisors is an integer number (1563491916).

Almost surely, 2^21024411343 is an apocalyptic number.

21024411343 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21024411343 is a deficient number, since it is larger than the sum of its proper divisors (3991459313).

21024411343 is a wasteful number, since it uses less digits than its factorization.

21024411343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4136274.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21024411343 its reverse (34311442012), we get a palindrome (55335853355).

The spelling of 21024411343 in words is "twenty-one billion, twenty-four million, four hundred eleven thousand, three hundred forty-three".