21168114 has 32 divisors (see below), whose sum is σ = 46884096. Its totient is φ = 6317520.

The previous prime is 21168113. The next prime is 21168137. The reversal of 21168114 is 41186112.

It is not an unprimeable number, because it can be changed into a prime (21168113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2029 + ... + 6815.

It is an arithmetic number, because the mean of its divisors is an integer number (1465128).

Almost surely, 2^21168114 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21168114, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23442048).

21168114 is an abundant number, since it is smaller than the sum of its proper divisors (25715982).

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

21168114 is a wasteful number, since it uses less digits than its factorization.

21168114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4870.

The product of its digits is 384, while the sum is 24.

The square root of 21168114 is about 4600.8818719893. The cubic root of 21168114 is about 276.6266741116.

The spelling of 21168114 in words is "twenty-one million, one hundred sixty-eight thousand, one hundred fourteen".