201163121 has 2 divisors, whose sum is σ = 201163122. Its totient is φ = 201163120.

The previous prime is 201163099. The next prime is 201163141. The reversal of 201163121 is 121361102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183982096 + 17181025 = 13564^2 + 4145^2 .

It is a cyclic number.

It is not a de Polignac number, because 201163121 - 2¹⁰ = 201162097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201163121.

It is not a weakly prime, because it can be changed into another prime (201163141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100581560 + 100581561.

It is an arithmetic number, because the mean of its divisors is an integer number (100581561).

Almost surely, 2^201163121 is an apocalyptic number.

It is an amenable number.

201163121 is a deficient number, since it is larger than the sum of its proper divisors (1).

201163121 is an equidigital number, since it uses as much as digits as its factorization.

201163121 is an evil number, because the sum of its binary digits is even.

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

The square root of 201163121 is about 14183.1985461672. The cubic root of 201163121 is about 585.9350192170.

The spelling of 201163121 in words is "two hundred one million, one hundred sixty-three thousand, one hundred twenty-one".