202010001091 has 2 divisors, whose sum is σ = 202010001092. Its totient is φ = 202010001090.

The previous prime is 202010001041. The next prime is 202010001191. The reversal of 202010001091 is 190100010202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202010001091 - 2⁷ = 202010000963 is a prime.

It is not a weakly prime, because it can be changed into another prime (202010001041) 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, 101005000545 + 101005000546.

It is an arithmetic number, because the mean of its divisors is an integer number (101005000546).

Almost surely, 2^202010001091 is an apocalyptic number.

202010001091 is a deficient number, since it is larger than the sum of its proper divisors (1).

202010001091 is an equidigital number, since it uses as much as digits as its factorization.

202010001091 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.

Adding to 202010001091 its reverse (190100010202), we get a palindrome (392110011293).

The spelling of 202010001091 in words is "two hundred two billion, ten million, one thousand, ninety-one".