121122122171 has 2 divisors, whose sum is σ = 121122122172. Its totient is φ = 121122122170.

The previous prime is 121122122027. The next prime is 121122122197. The reversal of 121122122171 is 171221221121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121122122171 is a prime.

It is not a weakly prime, because it can be changed into another prime (121122152171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561061085 + 60561061086.

It is an arithmetic number, because the mean of its divisors is an integer number (60561061086).

Almost surely, 2^121122122171 is an apocalyptic number.

121122122171 is a deficient number, since it is larger than the sum of its proper divisors (1).

121122122171 is an equidigital number, since it uses as much as digits as its factorization.

121122122171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 224, while the sum is 23.

Adding to 121122122171 its reverse (171221221121), we get a palindrome (292343343292).

The spelling of 121122122171 in words is "one hundred twenty-one billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred seventy-one".