200120919091 has 2 divisors, whose sum is σ = 200120919092. Its totient is φ = 200120919090.

The previous prime is 200120919049. The next prime is 200120919161. The reversal of 200120919091 is 190919021002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200120919091 - 2⁹ = 200120918579 is a prime.

It is not a weakly prime, because it can be changed into another prime (200120919391) 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, 100060459545 + 100060459546.

It is an arithmetic number, because the mean of its divisors is an integer number (100060459546).

Almost surely, 2^200120919091 is an apocalyptic number.

200120919091 is a deficient number, since it is larger than the sum of its proper divisors (1).

200120919091 is an equidigital number, since it uses as much as digits as its factorization.

200120919091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 34.

The spelling of 200120919091 in words is "two hundred billion, one hundred twenty million, nine hundred nineteen thousand, ninety-one".