21126614 has 8 divisors (see below), whose sum is σ = 33554088. Its totient is φ = 9941920.

The previous prime is 21126607. The next prime is 21126617. The reversal of 21126614 is 41662112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21126614.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21126617) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 310652 + ... + 310719.

It is an arithmetic number, because the mean of its divisors is an integer number (4194261).

Almost surely, 2^21126614 is an apocalyptic number.

21126614 is a deficient number, since it is larger than the sum of its proper divisors (12427474).

21126614 is a wasteful number, since it uses less digits than its factorization.

21126614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621390.

The product of its digits is 576, while the sum is 23.

The square root of 21126614 is about 4596.3696544121. The cubic root of 21126614 is about 276.4457806960.

Adding to 21126614 its reverse (41662112), we get a palindrome (62788726).

The spelling of 21126614 in words is "twenty-one million, one hundred twenty-six thousand, six hundred fourteen".