14231415221 has 2 divisors, whose sum is σ = 14231415222. Its totient is φ = 14231415220.

The previous prime is 14231415217. The next prime is 14231415223. The reversal of 14231415221 is 12251413241.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13673794225 + 557620996 = 116935^2 + 23614^2 .

It is a cyclic number.

It is not a de Polignac number, because 14231415221 - 2² = 14231415217 is a prime.

It is a super-3 number, since 3×14231415221³ (a number of 31 digits) contains 333 as substring.

Together with 14231415223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14231415223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7115707610 + 7115707611.

It is an arithmetic number, because the mean of its divisors is an integer number (7115707611).

Almost surely, 2^14231415221 is an apocalyptic number.

It is an amenable number.

14231415221 is a deficient number, since it is larger than the sum of its proper divisors (1).

14231415221 is an equidigital number, since it uses as much as digits as its factorization.

14231415221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 26.

Adding to 14231415221 its reverse (12251413241), we get a palindrome (26482828462).

The spelling of 14231415221 in words is "fourteen billion, two hundred thirty-one million, four hundred fifteen thousand, two hundred twenty-one".