21224241112 has 16 divisors (see below), whose sum is σ = 39799935360. Its totient is φ = 10610925024.

The previous prime is 21224241089. The next prime is 21224241121. The reversal of 21224241112 is 21114242212.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71608 + ... + 218119.

It is an arithmetic number, because the mean of its divisors is an integer number (2487495960).

Almost surely, 2^21224241112 is an apocalyptic number.

It is an amenable number.

21224241112 is a deficient number, since it is larger than the sum of its proper divisors (18575694248).

21224241112 is a wasteful number, since it uses less digits than its factorization.

21224241112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298890 (or 298886 counting only the distinct ones).

The product of its digits is 512, while the sum is 22.

Adding to 21224241112 its reverse (21114242212), we get a palindrome (42338483324).

The spelling of 21224241112 in words is "twenty-one billion, two hundred twenty-four million, two hundred forty-one thousand, one hundred twelve".