21334422342 has 32 divisors (see below), whose sum is σ = 43171464960. Its totient is φ = 7027987680.

The previous prime is 21334422299. The next prime is 21334422371. The reversal of 21334422342 is 24322443312.

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 15 ways as a sum of consecutive naturals, for example, 268284 + ... + 338592.

It is an arithmetic number, because the mean of its divisors is an integer number (1349108280).

Almost surely, 2^21334422342 is an apocalyptic number.

21334422342 is an abundant number, since it is smaller than the sum of its proper divisors (21837042618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21334422342 is a wasteful number, since it uses less digits than its factorization.

21334422342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70908.

The product of its digits is 27648, while the sum is 30.

Adding to 21334422342 its reverse (24322443312), we get a palindrome (45656865654).

The spelling of 21334422342 in words is "twenty-one billion, three hundred thirty-four million, four hundred twenty-two thousand, three hundred forty-two".