21196115 has 12 divisors (see below), whose sum is σ = 26846784. Its totient is φ = 16063056.

The previous prime is 21196103. The next prime is 21196159. The reversal of 21196115 is 51169112.

It is not a de Polignac number, because 21196115 - 2⁸ = 21195859 is a prime.

It is a Duffinian 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 11 ways as a sum of consecutive naturals, for example, 4067 + ... + 7676.

It is an arithmetic number, because the mean of its divisors is an integer number (2237232).

Almost surely, 2^21196115 is an apocalyptic number.

21196115 is a deficient number, since it is larger than the sum of its proper divisors (5650669).

21196115 is a wasteful number, since it uses less digits than its factorization.

21196115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11786 (or 11767 counting only the distinct ones).

The product of its digits is 540, while the sum is 26.

The square root of 21196115 is about 4603.9238699179. The cubic root of 21196115 is about 276.7485935016.

The spelling of 21196115 in words is "twenty-one million, one hundred ninety-six thousand, one hundred fifteen".