21422324318 has 4 divisors (see below), whose sum is σ = 32133486480. Its totient is φ = 10711162158.

The previous prime is 21422324317. The next prime is 21422324333. The reversal of 21422324318 is 81342322412.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21422324317) by changing a digit.

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 as a sum of consecutive naturals, namely, 5355581078 + ... + 5355581081.

It is an arithmetic number, because the mean of its divisors is an integer number (8033371620).

Almost surely, 2^21422324318 is an apocalyptic number.

21422324318 is a deficient number, since it is larger than the sum of its proper divisors (10711162162).

21422324318 is a wasteful number, since it uses less digits than its factorization.

21422324318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10711162161.

The product of its digits is 18432, while the sum is 32.

The spelling of 21422324318 in words is "twenty-one billion, four hundred twenty-two million, three hundred twenty-four thousand, three hundred eighteen".