21317114 has 16 divisors (see below), whose sum is σ = 39355008. Its totient is φ = 8433072.

The previous prime is 21317083. The next prime is 21317129. The reversal of 21317114 is 41171312.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 58382 + ... + 58745.

It is an arithmetic number, because the mean of its divisors is an integer number (2459688).

Almost surely, 2^21317114 is an apocalyptic number.

21317114 is a deficient number, since it is larger than the sum of its proper divisors (18037894).

21317114 is a wasteful number, since it uses less digits than its factorization.

21317114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117149.

The product of its digits is 168, while the sum is 20.

The square root of 21317114 is about 4617.0460253283. The cubic root of 21317114 is about 277.2742053100.

Adding to 21317114 its reverse (41171312), we get a palindrome (62488426).

The spelling of 21317114 in words is "twenty-one million, three hundred seventeen thousand, one hundred fourteen".