121223232017 has 2 divisors, whose sum is σ = 121223232018. Its totient is φ = 121223232016.

The previous prime is 121223231993. The next prime is 121223232019. The reversal of 121223232017 is 710232322121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77222296321 + 44000935696 = 277889^2 + 209764^2 .

It is a cyclic number.

It is not a de Polignac number, because 121223232017 - 2³² = 116928264721 is a prime.

Together with 121223232019, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121223232019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60611616008 + 60611616009.

It is an arithmetic number, because the mean of its divisors is an integer number (60611616009).

Almost surely, 2^121223232017 is an apocalyptic number.

It is an amenable number.

121223232017 is a deficient number, since it is larger than the sum of its proper divisors (1).

121223232017 is an equidigital number, since it uses as much as digits as its factorization.

121223232017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 121223232017 its reverse (710232322121), we get a palindrome (831455554138).

The spelling of 121223232017 in words is "one hundred twenty-one billion, two hundred twenty-three million, two hundred thirty-two thousand, seventeen".