9912211 has 2 divisors, whose sum is σ = 9912212. Its totient is φ = 9912210.

The previous prime is 9912169. The next prime is 9912251. The reversal of 9912211 is 1122199.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9912211 - 2¹³ = 9904019 is a prime.

It is not a weakly prime, because it can be changed into another prime (9912251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4956105 + 4956106.

It is an arithmetic number, because the mean of its divisors is an integer number (4956106).

Almost surely, 2^9912211 is an apocalyptic number.

9912211 is a deficient number, since it is larger than the sum of its proper divisors (1).

9912211 is an equidigital number, since it uses as much as digits as its factorization.

9912211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324, while the sum is 25.

The square root of 9912211 is about 3148.3664018027. The cubic root of 9912211 is about 214.8111628367.

The spelling of 9912211 in words is "nine million, nine hundred twelve thousand, two hundred eleven".