2009222191 has 2 divisors, whose sum is σ = 2009222192. Its totient is φ = 2009222190.

The previous prime is 2009222177. The next prime is 2009222219. The reversal of 2009222191 is 1912229002.

It is an a-pointer prime, because the next prime (2009222219) can be obtained adding 2009222191 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2009222191 - 2¹⁹ = 2008697903 is a prime.

It is a super-3 number, since 3×2009222191³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2009222491) 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, 1004611095 + 1004611096.

It is an arithmetic number, because the mean of its divisors is an integer number (1004611096).

Almost surely, 2^2009222191 is an apocalyptic number.

2009222191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2009222191 is an equidigital number, since it uses as much as digits as its factorization.

2009222191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 2009222191 is about 44824.3481938109. The cubic root of 2009222191 is about 1261.8546197360.

The spelling of 2009222191 in words is "two billion, nine million, two hundred twenty-two thousand, one hundred ninety-one".