21330112228 has 24 divisors (see below), whose sum is σ = 40113353952. Its totient is φ = 9887881344.

The previous prime is 21330112207. The next prime is 21330112229. The reversal of 21330112228 is 82221103312.

It is not an unprimeable number, because it can be changed into a prime (21330112229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2336326 + ... + 2345437.

It is an arithmetic number, because the mean of its divisors is an integer number (1671389748).

Almost surely, 2^21330112228 is an apocalyptic number.

It is an amenable number.

21330112228 is a deficient number, since it is larger than the sum of its proper divisors (18783241724).

21330112228 is a wasteful number, since it uses less digits than its factorization.

21330112228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4681851 (or 4681849 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 21330112228 in words is "twenty-one billion, three hundred thirty million, one hundred twelve thousand, two hundred twenty-eight".