9982281029261 has 2 divisors, whose sum is σ = 9982281029262. Its totient is φ = 9982281029260.

The previous prime is 9982281029219. The next prime is 9982281029269. The reversal of 9982281029261 is 1629201822899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9283416796900 + 698864232361 = 3046870^2 + 835981^2 .

It is a cyclic number.

It is not a de Polignac number, because 9982281029261 - 2¹⁴ = 9982281012877 is a prime.

It is a super-2 number, since 2×9982281029261² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9982281029261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9982281029269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4991140514630 + 4991140514631.

It is an arithmetic number, because the mean of its divisors is an integer number (4991140514631).

Almost surely, 2^{9982281029261} is an apocalyptic number.

It is an amenable number.

9982281029261 is a deficient number, since it is larger than the sum of its proper divisors (1).

9982281029261 is an equidigital number, since it uses as much as digits as its factorization.

9982281029261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4478976, while the sum is 59.

The spelling of 9982281029261 in words is "nine trillion, nine hundred eighty-two billion, two hundred eighty-one million, twenty-nine thousand, two hundred sixty-one".