21112241444 has 24 divisors (see below), whose sum is σ = 42698920320. Its totient is φ = 8946438336.

The previous prime is 21112241407. The next prime is 21112241453. The reversal of 21112241444 is 44414221112.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4233512 + ... + 4238495.

It is an arithmetic number, because the mean of its divisors is an integer number (1779121680).

Almost surely, 2^21112241444 is an apocalyptic number.

It is an amenable number.

21112241444 is an abundant number, since it is smaller than the sum of its proper divisors (21586678876).

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

21112241444 is a wasteful number, since it uses less digits than its factorization.

21112241444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8472107 (or 8472105 counting only the distinct ones).

The product of its digits is 2048, while the sum is 26.

Adding to 21112241444 its reverse (44414221112), we get a palindrome (65526462556).

The spelling of 21112241444 in words is "twenty-one billion, one hundred twelve million, two hundred forty-one thousand, four hundred forty-four".