202020011102191 has 2 divisors, whose sum is σ = 202020011102192. Its totient is φ = 202020011102190.

The previous prime is 202020011102171. The next prime is 202020011102269. The reversal of 202020011102191 is 191201110020202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202020011102191 - 2⁵ = 202020011102159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202020011102141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010005551095 + 101010005551096.

It is an arithmetic number, because the mean of its divisors is an integer number (101010005551096).

Almost surely, 2^{202020011102191} is an apocalyptic number.

202020011102191 is a deficient number, since it is larger than the sum of its proper divisors (1).

202020011102191 is an equidigital number, since it uses as much as digits as its factorization.

202020011102191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 202020011102191 its reverse (191201110020202), we get a palindrome (393221121122393).

The spelling of 202020011102191 in words is "two hundred two trillion, twenty billion, eleven million, one hundred two thousand, one hundred ninety-one".