20214321 has 8 divisors (see below), whose sum is σ = 27681024. Its totient is φ = 13111920.

The previous prime is 20214319. The next prime is 20214323. The reversal of 20214321 is 12341202.

It is an interprime number because it is at equal distance from previous prime (20214319) and next prime (20214323).

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

It is not a de Polignac number, because 20214321 - 2¹ = 20214319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20214321.

It is not an unprimeable number, because it can be changed into a prime (20214323) 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 7 ways as a sum of consecutive naturals, for example, 90945 + ... + 91166.

It is an arithmetic number, because the mean of its divisors is an integer number (3460128).

Almost surely, 2^20214321 is an apocalyptic number.

It is an amenable number.

20214321 is a deficient number, since it is larger than the sum of its proper divisors (7466703).

20214321 is a wasteful number, since it uses less digits than its factorization.

20214321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182151.

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

The square root of 20214321 is about 4496.0339189112. The cubic root of 20214321 is about 272.4079132212.

Adding to 20214321 its reverse (12341202), we get a palindrome (32555523).

The spelling of 20214321 in words is "twenty million, two hundred fourteen thousand, three hundred twenty-one".