21434242232303 has 8 divisors (see below), whose sum is σ = 21497598662400. Its totient is φ = 21370959346968.

The previous prime is 21434242232297. The next prime is 21434242232369. The reversal of 21434242232303 is 30323224243412.

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

It is a cyclic number.

It is not a de Polignac number, because 21434242232303 - 2⁴ = 21434242232287 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 (21434242252303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17802413 + ... + 18968246.

It is an arithmetic number, because the mean of its divisors is an integer number (2687199832800).

Almost surely, 2^{21434242232303} is an apocalyptic number.

21434242232303 is a deficient number, since it is larger than the sum of its proper divisors (63356430097).

21434242232303 is a wasteful number, since it uses less digits than its factorization.

21434242232303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36772381.

The product of its (nonzero) digits is 165888, while the sum is 35.

Adding to 21434242232303 its reverse (30323224243412), we get a palindrome (51757466475715).

The spelling of 21434242232303 in words is "twenty-one trillion, four hundred thirty-four billion, two hundred forty-two million, two hundred thirty-two thousand, three hundred three".