102120201191 has 2 divisors, whose sum is σ = 102120201192. Its totient is φ = 102120201190.

The previous prime is 102120201119. The next prime is 102120201223. The reversal of 102120201191 is 191102021201.

Together with previous prime (102120201119) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102120201191 - 2¹⁰ = 102120200167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102150201191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51060100595 + 51060100596.

It is an arithmetic number, because the mean of its divisors is an integer number (51060100596).

Almost surely, 2^102120201191 is an apocalyptic number.

102120201191 is a deficient number, since it is larger than the sum of its proper divisors (1).

102120201191 is an equidigital number, since it uses as much as digits as its factorization.

102120201191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 102120201191 its reverse (191102021201), we get a palindrome (293222222392).

The spelling of 102120201191 in words is "one hundred two billion, one hundred twenty million, two hundred one thousand, one hundred ninety-one".