10216601210261 has 2 divisors, whose sum is σ = 10216601210262. Its totient is φ = 10216601210260.

The previous prime is 10216601210219. The next prime is 10216601210423. The reversal of 10216601210261 is 16201210661201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9723832309636 + 492768900625 = 3118306^2 + 701975^2 .

It is an emirp because it is prime and its reverse (16201210661201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10216601210261 is a prime.

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 (10216601213261) 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, 5108300605130 + 5108300605131.

It is an arithmetic number, because the mean of its divisors is an integer number (5108300605131).

Almost surely, 2^{10216601210261} is an apocalyptic number.

It is an amenable number.

10216601210261 is a deficient number, since it is larger than the sum of its proper divisors (1).

10216601210261 is an equidigital number, since it uses as much as digits as its factorization.

10216601210261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

Adding to 10216601210261 its reverse (16201210661201), we get a palindrome (26417811871462).

The spelling of 10216601210261 in words is "ten trillion, two hundred sixteen billion, six hundred one million, two hundred ten thousand, two hundred sixty-one".