210000201091 has 2 divisors, whose sum is σ = 210000201092. Its totient is φ = 210000201090.

The previous prime is 210000201083. The next prime is 210000201139. The reversal of 210000201091 is 190102000012.

210000201091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210000201091 - 2³ = 210000201083 is a prime.

It is not a weakly prime, because it can be changed into another prime (210000801091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105000100545 + 105000100546.

It is an arithmetic number, because the mean of its divisors is an integer number (105000100546).

Almost surely, 2^210000201091 is an apocalyptic number.

210000201091 is a deficient number, since it is larger than the sum of its proper divisors (1).

210000201091 is an equidigital number, since it uses as much as digits as its factorization.

210000201091 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 16.

The spelling of 210000201091 in words is "two hundred ten billion, two hundred one thousand, ninety-one".