201010000002191 has 2 divisors, whose sum is σ = 201010000002192. Its totient is φ = 201010000002190.

The previous prime is 201010000002187. The next prime is 201010000002211. The reversal of 201010000002191 is 191200000010102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201010000002191 - 2² = 201010000002187 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201010000002391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100505000001095 + 100505000001096.

It is an arithmetic number, because the mean of its divisors is an integer number (100505000001096).

Almost surely, 2^{201010000002191} is an apocalyptic number.

201010000002191 is a deficient number, since it is larger than the sum of its proper divisors (1).

201010000002191 is an equidigital number, since it uses as much as digits as its factorization.

201010000002191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 201010000002191 its reverse (191200000010102), we get a palindrome (392210000012293).

The spelling of 201010000002191 in words is "two hundred one trillion, ten billion, two thousand, one hundred ninety-one".