21928882912 has 24 divisors (see below), whose sum is σ = 43437360456. Its totient is φ = 10897172352.

The previous prime is 21928882901. The next prime is 21928883021.

21928882912 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 21928882912.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2096863 + ... + 2107294.

It is an arithmetic number, because the mean of its divisors is an integer number (1809890019).

Almost surely, 2^21928882912 is an apocalyptic number.

It is an amenable number.

21928882912 is a deficient number, since it is larger than the sum of its proper divisors (21508477544).

21928882912 is a wasteful number, since it uses less digits than its factorization.

21928882912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4204330 (or 4204322 counting only the distinct ones).

The product of its digits is 663552, while the sum is 52.

The spelling of 21928882912 in words is "twenty-one billion, nine hundred twenty-eight million, eight hundred eighty-two thousand, nine hundred twelve".