21113034244 has 6 divisors (see below), whose sum is σ = 36947809934. Its totient is φ = 10556517120.

The previous prime is 21113034233. The next prime is 21113034263. The reversal of 21113034244 is 44243031112.

It can be written as a sum of positive squares in only one way, i.e., 18257414400 + 2855619844 = 135120^2 + 53438^2 .

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 as a sum of consecutive naturals, namely, 2639129277 + ... + 2639129284.

Almost surely, 2^21113034244 is an apocalyptic number.

It is an amenable number.

21113034244 is a deficient number, since it is larger than the sum of its proper divisors (15834775690).

21113034244 is a wasteful number, since it uses less digits than its factorization.

21113034244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5278258565 (or 5278258563 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21113034244 its reverse (44243031112), we get a palindrome (65356065356).

The spelling of 21113034244 in words is "twenty-one billion, one hundred thirteen million, thirty-four thousand, two hundred forty-four".