21434321422 has 8 divisors (see below), whose sum is σ = 32164132896. Its totient is φ = 10712943792.

The previous prime is 21434321417. The next prime is 21434321449. The reversal of 21434321422 is 22412343412.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2102103 + ... + 2112274.

It is an arithmetic number, because the mean of its divisors is an integer number (4020516612).

Almost surely, 2^21434321422 is an apocalyptic number.

21434321422 is a deficient number, since it is larger than the sum of its proper divisors (10729811474).

21434321422 is a wasteful number, since it uses less digits than its factorization.

21434321422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4216922.

The product of its digits is 9216, while the sum is 28.

Adding to 21434321422 its reverse (22412343412), we get a palindrome (43846664834).

The spelling of 21434321422 in words is "twenty-one billion, four hundred thirty-four million, three hundred twenty-one thousand, four hundred twenty-two".