2212209991 has 2 divisors, whose sum is σ = 2212209992. Its totient is φ = 2212209990.

The previous prime is 2212209971. The next prime is 2212210027. The reversal of 2212209991 is 1999022122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2212209991 - 2¹³ = 2212201799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2212209991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2212209931) 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, 1106104995 + 1106104996.

It is an arithmetic number, because the mean of its divisors is an integer number (1106104996).

Almost surely, 2^2212209991 is an apocalyptic number.

2212209991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212209991 is an equidigital number, since it uses as much as digits as its factorization.

2212209991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 2212209991 is about 47034.1364436512. The cubic root of 2212209991 is about 1302.9931016610.

The spelling of 2212209991 in words is "two billion, two hundred twelve million, two hundred nine thousand, nine hundred ninety-one".