9911980213 has 2 divisors, whose sum is σ = 9911980214. Its totient is φ = 9911980212.

The previous prime is 9911980187. The next prime is 9911980229. The reversal of 9911980213 is 3120891199.

9911980213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8447999569 + 1463980644 = 91913^2 + 38262^2 .

It is a cyclic number.

It is not a de Polignac number, because 9911980213 - 2¹⁷ = 9911849141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9911980213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9911980513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4955990106 + 4955990107.

It is an arithmetic number, because the mean of its divisors is an integer number (4955990107).

Almost surely, 2^9911980213 is an apocalyptic number.

It is an amenable number.

9911980213 is a deficient number, since it is larger than the sum of its proper divisors (1).

9911980213 is an equidigital number, since it uses as much as digits as its factorization.

9911980213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 43.

The square root of 9911980213 is about 99558.9283439712. The cubic root of 9911980213 is about 2148.0949566712.

The spelling of 9911980213 in words is "nine billion, nine hundred eleven million, nine hundred eighty thousand, two hundred thirteen".