1065244165021 has 2 divisors, whose sum is σ = 1065244165022. Its totient is φ = 1065244165020.

The previous prime is 1065244165019. The next prime is 1065244165033. The reversal of 1065244165021 is 1205614425601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 749272016025 + 315972148996 = 865605^2 + 562114^2 .

It is a cyclic number.

It is not a de Polignac number, because 1065244165021 - 2¹ = 1065244165019 is a prime.

It is a super-2 number, since 2×1065244165021² (a number of 25 digits) contains 22 as substring.

Together with 1065244165019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1065244160021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532622082510 + 532622082511.

It is an arithmetic number, because the mean of its divisors is an integer number (532622082511).

Almost surely, 2^{1065244165021} is an apocalyptic number.

It is an amenable number.

1065244165021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1065244165021 is an equidigital number, since it uses as much as digits as its factorization.

1065244165021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 1065244165021 in words is "one trillion, sixty-five billion, two hundred forty-four million, one hundred sixty-five thousand, twenty-one".