102163121 has 2 divisors, whose sum is σ = 102163122. Its totient is φ = 102163120.

The previous prime is 102163099. The next prime is 102163147. The reversal of 102163121 is 121361201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81360400 + 20802721 = 9020^2 + 4561^2 .

It is a cyclic number.

It is not a de Polignac number, because 102163121 - 2¹⁸ = 101900977 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102163121.

It is not a weakly prime, because it can be changed into another prime (102166121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51081560 + 51081561.

It is an arithmetic number, because the mean of its divisors is an integer number (51081561).

Almost surely, 2^102163121 is an apocalyptic number.

It is an amenable number.

102163121 is a deficient number, since it is larger than the sum of its proper divisors (1).

102163121 is an equidigital number, since it uses as much as digits as its factorization.

102163121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 102163121 is about 10107.5774050956. The cubic root of 102163121 is about 467.4818104202.

The spelling of 102163121 in words is "one hundred two million, one hundred sixty-three thousand, one hundred twenty-one".