21068301 has 16 divisors (see below), whose sum is σ = 28986048. Its totient is φ = 13603200.

The previous prime is 21068291. The next prime is 21068309. The reversal of 21068301 is 10386012.

It is not a de Polignac number, because 21068301 - 2¹⁵ = 21035533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21068309) 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 in 15 ways as a sum of consecutive naturals, for example, 18766 + ... + 19856.

It is an arithmetic number, because the mean of its divisors is an integer number (1811628).

Almost surely, 2^21068301 is an apocalyptic number.

It is an amenable number.

21068301 is a deficient number, since it is larger than the sum of its proper divisors (7917747).

21068301 is a wasteful number, since it uses less digits than its factorization.

21068301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 21068301 is about 4590.0218953726. The cubic root of 21068301 is about 276.1912007422.

The spelling of 21068301 in words is "twenty-one million, sixty-eight thousand, three hundred one".