14224021221 has 8 divisors (see below), whose sum is σ = 19015403680. Its totient is φ = 9457659792.

The previous prime is 14224021199. The next prime is 14224021237. The reversal of 14224021221 is 12212042241.

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

It is not a de Polignac number, because 14224021221 - 2¹⁰ = 14224020197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14224021241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6253930 + ... + 6256203.

It is an arithmetic number, because the mean of its divisors is an integer number (2376925460).

Almost surely, 2^14224021221 is an apocalyptic number.

It is an amenable number.

14224021221 is a deficient number, since it is larger than the sum of its proper divisors (4791382459).

14224021221 is a wasteful number, since it uses less digits than its factorization.

14224021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12510515.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 14224021221 its reverse (12212042241), we get a palindrome (26436063462).

The spelling of 14224021221 in words is "fourteen billion, two hundred twenty-four million, twenty-one thousand, two hundred twenty-one".