163202016121 has 2 divisors, whose sum is σ = 163202016122. Its totient is φ = 163202016120.

The previous prime is 163202016097. The next prime is 163202016157. The reversal of 163202016121 is 121610202361.

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., 96805610496 + 66396405625 = 311136^2 + 257675^2 .

It is a cyclic number.

It is not a de Polignac number, because 163202016121 - 2³⁷ = 25763062649 is a prime.

It is not a weakly prime, because it can be changed into another prime (163202010121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81601008060 + 81601008061.

It is an arithmetic number, because the mean of its divisors is an integer number (81601008061).

Almost surely, 2^163202016121 is an apocalyptic number.

It is an amenable number.

163202016121 is a deficient number, since it is larger than the sum of its proper divisors (1).

163202016121 is an equidigital number, since it uses as much as digits as its factorization.

163202016121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 163202016121 its reverse (121610202361), we get a palindrome (284812218482).

The spelling of 163202016121 in words is "one hundred sixty-three billion, two hundred two million, sixteen thousand, one hundred twenty-one".