170016316121 has 2 divisors, whose sum is σ = 170016316122. Its totient is φ = 170016316120.

The previous prime is 170016316117. The next prime is 170016316231. The reversal of 170016316121 is 121613610071.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169904718025 + 111598096 = 412195^2 + 10564^2 .

It is an emirp because it is prime and its reverse (121613610071) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 170016316121 - 2² = 170016316117 is a prime.

It is not a weakly prime, because it can be changed into another prime (170016316621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85008158060 + 85008158061.

It is an arithmetic number, because the mean of its divisors is an integer number (85008158061).

Almost surely, 2^170016316121 is an apocalyptic number.

It is an amenable number.

170016316121 is a deficient number, since it is larger than the sum of its proper divisors (1).

170016316121 is an equidigital number, since it uses as much as digits as its factorization.

170016316121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 29.

Adding to 170016316121 its reverse (121613610071), we get a palindrome (291629926192).

The spelling of 170016316121 in words is "one hundred seventy billion, sixteen million, three hundred sixteen thousand, one hundred twenty-one".