21422303224 has 32 divisors (see below), whose sum is σ = 47900805120. Its totient is φ = 8781813216.

The previous prime is 21422303197. The next prime is 21422303233. The reversal of 21422303224 is 42230322412.

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 7 ways as a sum of consecutive naturals, for example, 8314824 + ... + 8317399.

It is an arithmetic number, because the mean of its divisors is an integer number (1496900160).

Almost surely, 2^21422303224 is an apocalyptic number.

It is an amenable number.

21422303224 is an abundant number, since it is smaller than the sum of its proper divisors (26478501896).

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

21422303224 is a wasteful number, since it uses less digits than its factorization.

21422303224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16632259 (or 16632255 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 21422303224 its reverse (42230322412), we get a palindrome (63652625636).

The spelling of 21422303224 in words is "twenty-one billion, four hundred twenty-two million, three hundred three thousand, two hundred twenty-four".