212300997465569 has 2 divisors, whose sum is σ = 212300997465570. Its totient is φ = 212300997465568.

The previous prime is 212300997465563. The next prime is 212300997465581. The reversal of 212300997465569 is 965564799003212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 185048546595025 + 27252450870544 = 13603255^2 + 5220388^2 .

It is a cyclic number.

It is not a de Polignac number, because 212300997465569 - 2¹² = 212300997461473 is a prime.

It is a super-4 number, since 4×212300997465569⁴ (a number of 58 digits) contains 4444 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 junction number, because it is equal to n+sod(n) for n = 212300997465499 and 212300997465508.

It is not a weakly prime, because it can be changed into another prime (212300997465563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106150498732784 + 106150498732785.

It is an arithmetic number, because the mean of its divisors is an integer number (106150498732785).

Almost surely, 2^{212300997465569} is an apocalyptic number.

It is an amenable number.

212300997465569 is a deficient number, since it is larger than the sum of its proper divisors (1).

212300997465569 is an equidigital number, since it uses as much as digits as its factorization.

212300997465569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 220449600, while the sum is 68.

The spelling of 212300997465569 in words is "two hundred twelve trillion, three hundred billion, nine hundred ninety-seven million, four hundred sixty-five thousand, five hundred sixty-nine".