102001122191 has 2 divisors, whose sum is σ = 102001122192. Its totient is φ = 102001122190.

The previous prime is 102001122173. The next prime is 102001122193. The reversal of 102001122191 is 191221100201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102001122191 is a prime.

Together with 102001122193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102001122193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51000561095 + 51000561096.

It is an arithmetic number, because the mean of its divisors is an integer number (51000561096).

Almost surely, 2^102001122191 is an apocalyptic number.

102001122191 is a deficient number, since it is larger than the sum of its proper divisors (1).

102001122191 is an equidigital number, since it uses as much as digits as its factorization.

102001122191 is an odious number, because the sum of its binary digits is odd.

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

Adding to 102001122191 its reverse (191221100201), we get a palindrome (293222222392).

The spelling of 102001122191 in words is "one hundred two billion, one million, one hundred twenty-two thousand, one hundred ninety-one".