21422303320 has 128 divisors (see below), whose sum is σ = 53378196480. Its totient is φ = 7672576000.

The previous prime is 21422303311. The next prime is 21422303341. The reversal of 21422303320 is 2330322412.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 21422303291 and 21422303300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15739440 + ... + 15740800.

It is an arithmetic number, because the mean of its divisors is an integer number (417017160).

Almost surely, 2^21422303320 is an apocalyptic number.

21422303320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21422303320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26689098240).

21422303320 is an abundant number, since it is smaller than the sum of its proper divisors (31955893160).

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

21422303320 is a wasteful number, since it uses less digits than its factorization.

21422303320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1897 (or 1893 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21422303320 its reverse (2330322412), we get a palindrome (23752625732).

The spelling of 21422303320 in words is "twenty-one billion, four hundred twenty-two million, three hundred three thousand, three hundred twenty".