21233324343 has 64 divisors (see below), whose sum is σ = 37405780992. Its totient is φ = 10372423680.

The previous prime is 21233324341. The next prime is 21233324381. The reversal of 21233324343 is 34342333212.

It is not a de Polignac number, because 21233324343 - 2¹ = 21233324341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21233324343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233324341) 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 63 ways as a sum of consecutive naturals, for example, 7825155 + ... + 7827867.

It is an arithmetic number, because the mean of its divisors is an integer number (584465328).

Almost surely, 2^21233324343 is an apocalyptic number.

21233324343 is a deficient number, since it is larger than the sum of its proper divisors (16172456649).

21233324343 is a wasteful number, since it uses less digits than its factorization.

21233324343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4744.

The product of its digits is 31104, while the sum is 30.

Adding to 21233324343 its reverse (34342333212), we get a palindrome (55575657555).

The spelling of 21233324343 in words is "twenty-one billion, two hundred thirty-three million, three hundred twenty-four thousand, three hundred forty-three".