20714221 has 8 divisors (see below), whose sum is σ = 22677984. Its totient is φ = 18763920.

The previous prime is 20714219. The next prime is 20714249. The reversal of 20714221 is 12241702.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20714221 - 2¹ = 20714219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20714521) 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 7 ways as a sum of consecutive naturals, for example, 10 + ... + 6436.

It is an arithmetic number, because the mean of its divisors is an integer number (2834748).

Almost surely, 2^20714221 is an apocalyptic number.

It is an amenable number.

20714221 is a deficient number, since it is larger than the sum of its proper divisors (1963763).

20714221 is a wasteful number, since it uses less digits than its factorization.

20714221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6731.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 20714221 is about 4551.2878397219. The cubic root of 20714221 is about 274.6352011417.

Adding to 20714221 its reverse (12241702), we get a palindrome (32955923).

The spelling of 20714221 in words is "twenty million, seven hundred fourteen thousand, two hundred twenty-one".