21422071434 has 8 divisors (see below), whose sum is σ = 42844142880. Its totient is φ = 7140690476.

The previous prime is 21422071423. The next prime is 21422071469. The reversal of 21422071434 is 43417022412.

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

21422071434 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1785172614 + ... + 1785172625.

It is an arithmetic number, because the mean of its divisors is an integer number (5355517860).

Almost surely, 2^21422071434 is an apocalyptic number.

21422071434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21422071434 is a wasteful number, since it uses less digits than its factorization.

21422071434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3570345244.

The product of its (nonzero) digits is 10752, while the sum is 30.

Adding to 21422071434 its reverse (43417022412), we get a palindrome (64839093846).

The spelling of 21422071434 in words is "twenty-one billion, four hundred twenty-two million, seventy-one thousand, four hundred thirty-four".