122121112171 has 2 divisors, whose sum is σ = 122121112172. Its totient is φ = 122121112170.

The previous prime is 122121112159. The next prime is 122121112199. The reversal of 122121112171 is 171211121221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122121112171 - 2¹⁵ = 122121079403 is a prime.

It is not a weakly prime, because it can be changed into another prime (122121112121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61060556085 + 61060556086.

It is an arithmetic number, because the mean of its divisors is an integer number (61060556086).

Almost surely, 2^122121112171 is an apocalyptic number.

122121112171 is a deficient number, since it is larger than the sum of its proper divisors (1).

122121112171 is an equidigital number, since it uses as much as digits as its factorization.

122121112171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112, while the sum is 22.

Adding to 122121112171 its reverse (171211121221), we get a palindrome (293332233392).

The spelling of 122121112171 in words is "one hundred twenty-two billion, one hundred twenty-one million, one hundred twelve thousand, one hundred seventy-one".