21422203422 has 8 divisors (see below), whose sum is σ = 42844406856. Its totient is φ = 7140734472.

The previous prime is 21422203417. The next prime is 21422203469. The reversal of 21422203422 is 22430222412.

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

21422203422 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 21422203392 and 21422203401.

It is a congruent 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, 1785183613 + ... + 1785183624.

It is an arithmetic number, because the mean of its divisors is an integer number (5355550857).

Almost surely, 2^21422203422 is an apocalyptic number.

21422203422 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.

21422203422 is a wasteful number, since it uses less digits than its factorization.

21422203422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3570367242.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 21422203422 its reverse (22430222412), we get a palindrome (43852425834).

The spelling of 21422203422 in words is "twenty-one billion, four hundred twenty-two million, two hundred three thousand, four hundred twenty-two".