9966211 has 2 divisors, whose sum is σ = 9966212. Its totient is φ = 9966210.

The previous prime is 9966193. The next prime is 9966217. The reversal of 9966211 is 1126699.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9966211 - 2⁹ = 9965699 is a prime.

It is a nialpdrome in base 10.

It is a zygodrome in base 6.

It is not a weakly prime, because it can be changed into another prime (9966217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4983105 + 4983106.

It is an arithmetic number, because the mean of its divisors is an integer number (4983106).

Almost surely, 2^9966211 is an apocalyptic number.

9966211 is a deficient number, since it is larger than the sum of its proper divisors (1).

9966211 is an equidigital number, since it uses as much as digits as its factorization.

9966211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 34.

The square root of 9966211 is about 3156.9306295831. The cubic root of 9966211 is about 215.2005412087.

The spelling of 9966211 in words is "nine million, nine hundred sixty-six thousand, two hundred eleven".