102211022191 has 2 divisors, whose sum is σ = 102211022192. Its totient is φ = 102211022190.

The previous prime is 102211022189. The next prime is 102211022351. The reversal of 102211022191 is 191220112201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102211022191 - 2¹ = 102211022189 is a prime.

Together with 102211022189, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102211022141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51105511095 + 51105511096.

It is an arithmetic number, because the mean of its divisors is an integer number (51105511096).

Almost surely, 2^102211022191 is an apocalyptic number.

102211022191 is a deficient number, since it is larger than the sum of its proper divisors (1).

102211022191 is an equidigital number, since it uses as much as digits as its factorization.

102211022191 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 102211022191 its reverse (191220112201), we get a palindrome (293431134392).

The spelling of 102211022191 in words is "one hundred two billion, two hundred eleven million, twenty-two thousand, one hundred ninety-one".