101200100120191 has 2 divisors, whose sum is σ = 101200100120192. Its totient is φ = 101200100120190.

The previous prime is 101200100120153. The next prime is 101200100120201. The reversal of 101200100120191 is 191021001002101.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101200100120191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101200100120111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50600050060095 + 50600050060096.

It is an arithmetic number, because the mean of its divisors is an integer number (50600050060096).

Almost surely, 2^{101200100120191} is an apocalyptic number.

101200100120191 is a deficient number, since it is larger than the sum of its proper divisors (1).

101200100120191 is an equidigital number, since it uses as much as digits as its factorization.

101200100120191 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 19.

Adding to 101200100120191 its reverse (191021001002101), we get a palindrome (292221101122292).

The spelling of 101200100120191 in words is "one hundred one trillion, two hundred billion, one hundred million, one hundred twenty thousand, one hundred ninety-one".