21414422444 has 24 divisors (see below), whose sum is σ = 37918465200. Its totient is φ = 10581306176.

The previous prime is 21414422431. The next prime is 21414422483. The reversal of 21414422444 is 44422441412.

It is a super-2 number, since 2×21414422444² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 21414422444.

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 7 ways as a sum of consecutive naturals, for example, 26219 + ... + 208605.

It is an arithmetic number, because the mean of its divisors is an integer number (1579936050).

Almost surely, 2^21414422444 is an apocalyptic number.

It is an amenable number.

21414422444 is a deficient number, since it is larger than the sum of its proper divisors (16504042756).

21414422444 is a wasteful number, since it uses less digits than its factorization.

21414422444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182737 (or 182735 counting only the distinct ones).

The product of its digits is 32768, while the sum is 32.

Adding to 21414422444 its reverse (44422441412), we get a palindrome (65836863856).

The spelling of 21414422444 in words is "twenty-one billion, four hundred fourteen million, four hundred twenty-two thousand, four hundred forty-four".