21113000044 has 6 divisors (see below), whose sum is σ = 36947750084. Its totient is φ = 10556500020.

The previous prime is 21113000039. The next prime is 21113000071. The reversal of 21113000044 is 44000031112.

It is a junction number, because it is equal to n+sod(n) for n = 21112999991 and 21113000027.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2639125002 + ... + 2639125009.

Almost surely, 2^21113000044 is an apocalyptic number.

It is an amenable number.

21113000044 is a deficient number, since it is larger than the sum of its proper divisors (15834750040).

21113000044 is a wasteful number, since it uses less digits than its factorization.

21113000044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5278250015 (or 5278250013 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21113000044 its reverse (44000031112), we get a palindrome (65113031156).

The spelling of 21113000044 in words is "twenty-one billion, one hundred thirteen million, forty-four", and thus it is an aban number.