14121443521 has 2 divisors, whose sum is σ = 14121443522. Its totient is φ = 14121443520.

The previous prime is 14121443519. The next prime is 14121443579. The reversal of 14121443521 is 12534412141.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8400639025 + 5720804496 = 91655^2 + 75636^2 .

It is an emirp because it is prime and its reverse (12534412141) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14121443521 - 2¹ = 14121443519 is a prime.

Together with 14121443519, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 14121443521.

It is not a weakly prime, because it can be changed into another prime (14121440521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7060721760 + 7060721761.

It is an arithmetic number, because the mean of its divisors is an integer number (7060721761).

Almost surely, 2^14121443521 is an apocalyptic number.

It is an amenable number.

14121443521 is a deficient number, since it is larger than the sum of its proper divisors (1).

14121443521 is an equidigital number, since it uses as much as digits as its factorization.

14121443521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 28.

Adding to 14121443521 its reverse (12534412141), we get a palindrome (26655855662).

The spelling of 14121443521 in words is "fourteen billion, one hundred twenty-one million, four hundred forty-three thousand, five hundred twenty-one".