201101022020191 has 2 divisors, whose sum is σ = 201101022020192. Its totient is φ = 201101022020190.

The previous prime is 201101022020177. The next prime is 201101022020203. The reversal of 201101022020191 is 191020220101102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201101022020191 - 2¹⁹ = 201101021495903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201101022029191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100550511010095 + 100550511010096.

It is an arithmetic number, because the mean of its divisors is an integer number (100550511010096).

Almost surely, 2^{201101022020191} is an apocalyptic number.

201101022020191 is a deficient number, since it is larger than the sum of its proper divisors (1).

201101022020191 is an equidigital number, since it uses as much as digits as its factorization.

201101022020191 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 201101022020191 its reverse (191020220101102), we get a palindrome (392121242121293).

The spelling of 201101022020191 in words is "two hundred one trillion, one hundred one billion, twenty-two million, twenty thousand, one hundred ninety-one".