21330112 has 14 divisors (see below), whose sum is σ = 42327068. Its totient is φ = 10665024.

The previous prime is 21330097. The next prime is 21330119. The reversal of 21330112 is 21103312.

It is a junction number, because it is equal to n+sod(n) for n = 21330092 and 21330101.

It is not an unprimeable number, because it can be changed into a prime (21330119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166578 + ... + 166705.

It is an arithmetic number, because the mean of its divisors is an integer number (3023362).

Almost surely, 2^21330112 is an apocalyptic number.

It is an amenable number.

21330112 is a deficient number, since it is larger than the sum of its proper divisors (20996956).

21330112 is an equidigital number, since it uses as much as digits as its factorization.

21330112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333295 (or 333285 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 21330112 is about 4618.4534207893. The cubic root of 21330112 is about 277.3305493639.

Adding to 21330112 its reverse (21103312), we get a palindrome (42433424).

The spelling of 21330112 in words is "twenty-one million, three hundred thirty thousand, one hundred twelve".