21314115 has 12 divisors (see below), whose sum is σ = 36944544. Its totient is φ = 11367504.

The previous prime is 21314087. The next prime is 21314149. The reversal of 21314115 is 51141312.

It is not a de Polignac number, because 21314115 - 2¹⁰ = 21313091 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 236779 + ... + 236868.

It is an arithmetic number, because the mean of its divisors is an integer number (3078712).

Almost surely, 2^21314115 is an apocalyptic number.

21314115 is a deficient number, since it is larger than the sum of its proper divisors (15630429).

21314115 is a wasteful number, since it uses less digits than its factorization.

21314115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473658 (or 473655 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 21314115 is about 4616.7212391480. The cubic root of 21314115 is about 277.2612019185.

Adding to 21314115 its reverse (51141312), we get a palindrome (72455427).

The spelling of 21314115 in words is "twenty-one million, three hundred fourteen thousand, one hundred fifteen".