163201308121 has 2 divisors, whose sum is σ = 163201308122. Its totient is φ = 163201308120.

The previous prime is 163201308047. The next prime is 163201308181. The reversal of 163201308121 is 121803102361.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155244668121 + 7956640000 = 394011^2 + 89200^2 .

It is a cyclic number.

It is not a de Polignac number, because 163201308121 - 2⁷ = 163201307993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163201308121.

It is not a weakly prime, because it can be changed into another prime (163201308181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81600654060 + 81600654061.

It is an arithmetic number, because the mean of its divisors is an integer number (81600654061).

Almost surely, 2^163201308121 is an apocalyptic number.

It is an amenable number.

163201308121 is a deficient number, since it is larger than the sum of its proper divisors (1).

163201308121 is an equidigital number, since it uses as much as digits as its factorization.

163201308121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 163201308121 in words is "one hundred sixty-three billion, two hundred one million, three hundred eight thousand, one hundred twenty-one".