201033402181 has 2 divisors, whose sum is σ = 201033402182. Its totient is φ = 201033402180.

The previous prime is 201033402137. The next prime is 201033402253. The reversal of 201033402181 is 181204330102.

It is a happy number.

201033402181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133980889156 + 67052513025 = 366034^2 + 258945^2 .

It is a cyclic number.

It is not a de Polignac number, because 201033402181 - 2¹¹ = 201033400133 is a prime.

It is a super-2 number, since 2×201033402181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201033406181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100516701090 + 100516701091.

It is an arithmetic number, because the mean of its divisors is an integer number (100516701091).

Almost surely, 2^201033402181 is an apocalyptic number.

It is an amenable number.

201033402181 is a deficient number, since it is larger than the sum of its proper divisors (1).

201033402181 is an equidigital number, since it uses as much as digits as its factorization.

201033402181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 201033402181 its reverse (181204330102), we get a palindrome (382237732283).

The spelling of 201033402181 in words is "two hundred one billion, thirty-three million, four hundred two thousand, one hundred eighty-one".