195022211 has 2 divisors, whose sum is σ = 195022212. Its totient is φ = 195022210.

The previous prime is 195022151. The next prime is 195022241. The reversal of 195022211 is 112220591.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195022211 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (195022241) 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, 97511105 + 97511106.

It is an arithmetic number, because the mean of its divisors is an integer number (97511106).

Almost surely, 2^195022211 is an apocalyptic number.

195022211 is a deficient number, since it is larger than the sum of its proper divisors (1).

195022211 is an equidigital number, since it uses as much as digits as its factorization.

195022211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 195022211 is about 13965.0353024974. The cubic root of 195022211 is about 579.9110158770.

The spelling of 195022211 in words is "one hundred ninety-five million, twenty-two thousand, two hundred eleven".