14122415221 has 4 divisors (see below), whose sum is σ = 14135150700. Its totient is φ = 14109679744.

The previous prime is 14122415213. The next prime is 14122415227. The reversal of 14122415221 is 12251422141.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6027814321 + 8094600900 = 77639^2 + 89970^2 .

It is a cyclic number.

It is not a de Polignac number, because 14122415221 - 2³ = 14122415213 is a prime.

It is a super-2 number, since 2×14122415221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14122415227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6366076 + ... + 6368293.

It is an arithmetic number, because the mean of its divisors is an integer number (3533787675).

Almost surely, 2^14122415221 is an apocalyptic number.

It is an amenable number.

14122415221 is a deficient number, since it is larger than the sum of its proper divisors (12735479).

14122415221 is a wasteful number, since it uses less digits than its factorization.

14122415221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12735478.

The product of its digits is 1280, while the sum is 25.

Adding to 14122415221 its reverse (12251422141), we get a palindrome (26373837362).

The spelling of 14122415221 in words is "fourteen billion, one hundred twenty-two million, four hundred fifteen thousand, two hundred twenty-one".