220200191 has 2 divisors, whose sum is σ = 220200192. Its totient is φ = 220200190.

The previous prime is 220200173. The next prime is 220200203. The reversal of 220200191 is 191002022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220200191 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220200131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110100095 + 110100096.

It is an arithmetic number, because the mean of its divisors is an integer number (110100096).

Almost surely, 2^220200191 is an apocalyptic number.

220200191 is a deficient number, since it is larger than the sum of its proper divisors (1).

220200191 is an equidigital number, since it uses as much as digits as its factorization.

220200191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 220200191 is about 14839.1438769223. The cubic root of 220200191 is about 603.8641265278.

The spelling of 220200191 in words is "two hundred twenty million, two hundred thousand, one hundred ninety-one".