9988822211 has 2 divisors, whose sum is σ = 9988822212. Its totient is φ = 9988822210.

The previous prime is 9988822199. The next prime is 9988822273. The reversal of 9988822211 is 1122288899.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9988822211 - 2¹⁸ = 9988560067 is a prime.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 9988822211.

It is not a weakly prime, because it can be changed into another prime (9988828211) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4994411105 + 4994411106.

It is an arithmetic number, because the mean of its divisors is an integer number (4994411106).

Almost surely, 2^9988822211 is an apocalyptic number.

9988822211 is a deficient number, since it is larger than the sum of its proper divisors (1).

9988822211 is an equidigital number, since it uses as much as digits as its factorization.

9988822211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 50.

The square root of 9988822211 is about 99944.0954283944. The cubic root of 9988822211 is about 2153.6316635429.

The spelling of 9988822211 in words is "nine billion, nine hundred eighty-eight million, eight hundred twenty-two thousand, two hundred eleven".