21422324342 has 32 divisors (see below), whose sum is σ = 34158039552. Its totient is φ = 10041381504.

The previous prime is 21422324333. The next prime is 21422324411. The reversal of 21422324342 is 24342322412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12432293 + ... + 12434015.

It is an arithmetic number, because the mean of its divisors is an integer number (1067438736).

Almost surely, 2^21422324342 is an apocalyptic number.

21422324342 is a deficient number, since it is larger than the sum of its proper divisors (12735715210).

21422324342 is a wasteful number, since it uses less digits than its factorization.

21422324342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2972.

The product of its digits is 18432, while the sum is 29.

Adding to 21422324342 its reverse (24342322412), we get a palindrome (45764646754).

The spelling of 21422324342 in words is "twenty-one billion, four hundred twenty-two million, three hundred twenty-four thousand, three hundred forty-two".