214144445051021 has 2 divisors, whose sum is σ = 214144445051022. Its totient is φ = 214144445051020.

The previous prime is 214144445051003. The next prime is 214144445051081. The reversal of 214144445051021 is 120150544441412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209736607785796 + 4407837265225 = 14482286^2 + 2099485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214144445051021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214144445051081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107072222525510 + 107072222525511.

It is an arithmetic number, because the mean of its divisors is an integer number (107072222525511).

Almost surely, 2^{214144445051021} is an apocalyptic number.

It is an amenable number.

214144445051021 is a deficient number, since it is larger than the sum of its proper divisors (1).

214144445051021 is an equidigital number, since it uses as much as digits as its factorization.

214144445051021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102400, while the sum is 38.

Adding to 214144445051021 its reverse (120150544441412), we get a palindrome (334294989492433).

The spelling of 214144445051021 in words is "two hundred fourteen trillion, one hundred forty-four billion, four hundred forty-five million, fifty-one thousand, twenty-one".