21116314 has 4 divisors (see below), whose sum is σ = 31674474. Its totient is φ = 10558156.

The previous prime is 21116299. The next prime is 21116317. The reversal of 21116314 is 41361112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18344089 + 2772225 = 4283^2 + 1665^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21116291 and 21116300.

It is not an unprimeable number, because it can be changed into a prime (21116317) by changing a digit.

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 as a sum of consecutive naturals, namely, 5279077 + ... + 5279080.

Almost surely, 2^21116314 is an apocalyptic number.

21116314 is a deficient number, since it is larger than the sum of its proper divisors (10558160).

21116314 is a wasteful number, since it uses less digits than its factorization.

21116314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10558159.

The product of its digits is 144, while the sum is 19.

The square root of 21116314 is about 4595.2490683313. The cubic root of 21116314 is about 276.4008475704.

Adding to 21116314 its reverse (41361112), we get a palindrome (62477426).

The spelling of 21116314 in words is "twenty-one million, one hundred sixteen thousand, three hundred fourteen".