21113000344 has 16 divisors (see below), whose sum is σ = 40507501320. Its totient is φ = 10311000000.

The previous prime is 21113000323. The next prime is 21113000357. The reversal of 21113000344 is 44300031112.

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, 30687157 + ... + 30687844.

Almost surely, 2^21113000344 is an apocalyptic number.

It is an amenable number.

21113000344 is a deficient number, since it is larger than the sum of its proper divisors (19394500976).

21113000344 is a wasteful number, since it uses less digits than its factorization.

21113000344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61375050 (or 61375046 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21113000344 its reverse (44300031112), we get a palindrome (65413031456).

The spelling of 21113000344 in words is "twenty-one billion, one hundred thirteen million, three hundred forty-four", and thus it is an aban number.