201143005601 has 12 divisors (see below), whose sum is σ = 214475222052. Its totient is φ = 188591998464.

The previous prime is 201143005579. The next prime is 201143005603. The reversal of 201143005601 is 106500341102.

201143005601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 109246114576 + 91896891025 = 330524^2 + 303145^2 .

It is not a de Polignac number, because 201143005601 - 2¹⁴ = 201142989217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201143005603) 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 in 11 ways as a sum of consecutive naturals, for example, 2837060 + ... + 2907093.

It is an arithmetic number, because the mean of its divisors is an integer number (17872935171).

Almost surely, 2^201143005601 is an apocalyptic number.

It is an amenable number.

201143005601 is a deficient number, since it is larger than the sum of its proper divisors (13332216451).

201143005601 is an equidigital number, since it uses as much as digits as its factorization.

201143005601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5744288 (or 5744269 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 201143005601 its reverse (106500341102), we get a palindrome (307643346703).

The spelling of 201143005601 in words is "two hundred one billion, one hundred forty-three million, five thousand, six hundred one".