14140020221 has 2 divisors, whose sum is σ = 14140020222. Its totient is φ = 14140020220.

The previous prime is 14140020217. The next prime is 14140020287. The reversal of 14140020221 is 12202004141.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12704671225 + 1435348996 = 112715^2 + 37886^2 .

It is an emirp because it is prime and its reverse (12202004141) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14140020221 - 2² = 14140020217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 14140020221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14140020821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7070010110 + 7070010111.

It is an arithmetic number, because the mean of its divisors is an integer number (7070010111).

Almost surely, 2^14140020221 is an apocalyptic number.

It is an amenable number.

14140020221 is a deficient number, since it is larger than the sum of its proper divisors (1).

14140020221 is an equidigital number, since it uses as much as digits as its factorization.

14140020221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 14140020221 its reverse (12202004141), we get a palindrome (26342024362).

The spelling of 14140020221 in words is "fourteen billion, one hundred forty million, twenty thousand, two hundred twenty-one".