168348121 has 2 divisors, whose sum is σ = 168348122. Its totient is φ = 168348120.

The previous prime is 168348119. The next prime is 168348133. The reversal of 168348121 is 121843861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147962896 + 20385225 = 12164^2 + 4515^2 .

It is a cyclic number.

It is not a de Polignac number, because 168348121 - 2¹ = 168348119 is a prime.

It is a super-3 number, since 3×168348121³ (a number of 26 digits) contains 333 as substring.

Together with 168348119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (168348101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84174060 + 84174061.

It is an arithmetic number, because the mean of its divisors is an integer number (84174061).

Almost surely, 2^168348121 is an apocalyptic number.

It is an amenable number.

168348121 is a deficient number, since it is larger than the sum of its proper divisors (1).

168348121 is an equidigital number, since it uses as much as digits as its factorization.

168348121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 34.

The square root of 168348121 is about 12974.9035063849. The cubic root of 168348121 is about 552.1656990916.

The spelling of 168348121 in words is "one hundred sixty-eight million, three hundred forty-eight thousand, one hundred twenty-one".