14000199821 has 2 divisors, whose sum is σ = 14000199822. Its totient is φ = 14000199820.

The previous prime is 14000199721. The next prime is 14000199847. The reversal of 14000199821 is 12899100041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12821032900 + 1179166921 = 113230^2 + 34339^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14000199821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14000199721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7000099910 + 7000099911.

It is an arithmetic number, because the mean of its divisors is an integer number (7000099911).

Almost surely, 2^14000199821 is an apocalyptic number.

It is an amenable number.

14000199821 is a deficient number, since it is larger than the sum of its proper divisors (1).

14000199821 is an equidigital number, since it uses as much as digits as its factorization.

14000199821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 35.

Adding to 14000199821 its reverse (12899100041), we get a palindrome (26899299862).

The spelling of 14000199821 in words is "fourteen billion, one hundred ninety-nine thousand, eight hundred twenty-one".