14535221021 has 2 divisors, whose sum is σ = 14535221022. Its totient is φ = 14535221020.

The previous prime is 14535221011. The next prime is 14535221039. The reversal of 14535221021 is 12012253541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9947868121 + 4587352900 = 99739^2 + 67730^2 .

It is a cyclic number.

It is not a de Polignac number, because 14535221021 - 2⁶ = 14535220957 is a prime.

It is a super-3 number, since 3×14535221021³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14535221011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7267610510 + 7267610511.

It is an arithmetic number, because the mean of its divisors is an integer number (7267610511).

Almost surely, 2^14535221021 is an apocalyptic number.

It is an amenable number.

14535221021 is a deficient number, since it is larger than the sum of its proper divisors (1).

14535221021 is an equidigital number, since it uses as much as digits as its factorization.

14535221021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 14535221021 its reverse (12012253541), we get a palindrome (26547474562).

The spelling of 14535221021 in words is "fourteen billion, five hundred thirty-five million, two hundred twenty-one thousand, twenty-one".