122101010191 has 2 divisors, whose sum is σ = 122101010192. Its totient is φ = 122101010190.

The previous prime is 122101010177. The next prime is 122101010209. The reversal of 122101010191 is 191010101221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122101010191 - 2¹³ = 122101001999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122101010131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61050505095 + 61050505096.

It is an arithmetic number, because the mean of its divisors is an integer number (61050505096).

Almost surely, 2^122101010191 is an apocalyptic number.

122101010191 is a deficient number, since it is larger than the sum of its proper divisors (1).

122101010191 is an equidigital number, since it uses as much as digits as its factorization.

122101010191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 122101010191 in words is "one hundred twenty-two billion, one hundred one million, ten thousand, one hundred ninety-one".