21422444304032 has 24 divisors (see below), whose sum is σ = 42175581487200. Its totient is φ = 10711185513664.

The previous prime is 21422444304031. The next prime is 21422444304059. The reversal of 21422444304032 is 23040344422412.

It is a super-2 number, since 2×21422444304032² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21422444303983 and 21422444304001.

It is not an unprimeable number, because it can be changed into a prime (21422444304031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10036319 + ... + 11982177.

It is an arithmetic number, because the mean of its divisors is an integer number (1757315895300).

Almost surely, 2^{21422444304032} is an apocalyptic number.

It is an amenable number.

21422444304032 is a deficient number, since it is larger than the sum of its proper divisors (20753137183168).

21422444304032 is a wasteful number, since it uses less digits than its factorization.

21422444304032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2289908 (or 2289900 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 21422444304032 its reverse (23040344422412), we get a palindrome (44462788726444).

The spelling of 21422444304032 in words is "twenty-one trillion, four hundred twenty-two billion, four hundred forty-four million, three hundred four thousand, thirty-two".