122100210191 has 2 divisors, whose sum is σ = 122100210192. Its totient is φ = 122100210190.

The previous prime is 122100210173. The next prime is 122100210217. The reversal of 122100210191 is 191012001221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122100210191 - 2¹⁰ = 122100209167 is a prime.

It is a super-2 number, since 2×122100210191² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122100210691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61050105095 + 61050105096.

It is an arithmetic number, because the mean of its divisors is an integer number (61050105096).

Almost surely, 2^122100210191 is an apocalyptic number.

122100210191 is a deficient number, since it is larger than the sum of its proper divisors (1).

122100210191 is an equidigital number, since it uses as much as digits as its factorization.

122100210191 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.

The spelling of 122100210191 in words is "one hundred twenty-two billion, one hundred million, two hundred ten thousand, one hundred ninety-one".