1020201191 has 2 divisors, whose sum is σ = 1020201192. Its totient is φ = 1020201190.

The previous prime is 1020201157. The next prime is 1020201197. The reversal of 1020201191 is 1911020201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020201191 - 2¹⁸ = 1019939047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020201197) 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, 510100595 + 510100596.

It is an arithmetic number, because the mean of its divisors is an integer number (510100596).

Almost surely, 2^1020201191 is an apocalyptic number.

1020201191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020201191 is an equidigital number, since it uses as much as digits as its factorization.

1020201191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 1020201191 is about 31940.5884573218. The cubic root of 1020201191 is about 1006.6888893364.

Adding to 1020201191 its reverse (1911020201), we get a palindrome (2931221392).

The spelling of 1020201191 in words is "one billion, twenty million, two hundred one thousand, one hundred ninety-one".