201012020002091 has 2 divisors, whose sum is σ = 201012020002092. Its totient is φ = 201012020002090.

The previous prime is 201012020002043. The next prime is 201012020002141. The reversal of 201012020002091 is 190200020210102.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201012020002091 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (201012220002091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100506010001045 + 100506010001046.

It is an arithmetic number, because the mean of its divisors is an integer number (100506010001046).

Almost surely, 2^{201012020002091} is an apocalyptic number.

201012020002091 is a deficient number, since it is larger than the sum of its proper divisors (1).

201012020002091 is an equidigital number, since it uses as much as digits as its factorization.

201012020002091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 201012020002091 its reverse (190200020210102), we get a palindrome (391212040212193).

The spelling of 201012020002091 in words is "two hundred one trillion, twelve billion, twenty million, two thousand, ninety-one".