21034024112 has 40 divisors (see below), whose sum is σ = 43369831296. Its totient is φ = 9848093696.

The previous prime is 21034024111. The next prime is 21034024199. The reversal of 21034024112 is 21142043012.

It is not an unprimeable number, because it can be changed into a prime (21034024111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142688 + ... + 249855.

Almost surely, 2^21034024112 is an apocalyptic number.

It is an amenable number.

21034024112 is an abundant number, since it is smaller than the sum of its proper divisors (22335807184).

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

21034024112 is a wasteful number, since it uses less digits than its factorization.

21034024112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392765 (or 392759 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21034024112 its reverse (21142043012), we get a palindrome (42176067124).

The spelling of 21034024112 in words is "twenty-one billion, thirty-four million, twenty-four thousand, one hundred twelve".