20314221 has 32 divisors (see below), whose sum is σ = 29694720. Its totient is φ = 12317184.

The previous prime is 20314219. The next prime is 20314237. The reversal of 20314221 is 12241302.

It is not a de Polignac number, because 20314221 - 2¹ = 20314219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20314221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20314241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186315 + ... + 186423.

It is an arithmetic number, because the mean of its divisors is an integer number (927960).

Almost surely, 2^20314221 is an apocalyptic number.

It is an amenable number.

20314221 is a deficient number, since it is larger than the sum of its proper divisors (9380499).

20314221 is a wasteful number, since it uses less digits than its factorization.

20314221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20314221 is about 4507.1300180936. The cubic root of 20314221 is about 272.8559263411.

Adding to 20314221 its reverse (12241302), we get a palindrome (32555523).

The spelling of 20314221 in words is "twenty million, three hundred fourteen thousand, two hundred twenty-one".