201041001 has 16 divisors (see below), whose sum is σ = 340387200. Its totient is φ = 114880464.

The previous prime is 201040991. The next prime is 201041041. The reversal of 201041001 is 100140102.

It is a happy number.

It is not a de Polignac number, because 201041001 - 2⁵ = 201040969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201041041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 531666 + ... + 532043.

It is an arithmetic number, because the mean of its divisors is an integer number (21274200).

Almost surely, 2^201041001 is an apocalyptic number.

201041001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201041001 is a deficient number, since it is larger than the sum of its proper divisors (139346199).

201041001 is a wasteful number, since it uses less digits than its factorization.

201041001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063725 (or 1063719 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 201041001 is about 14178.8927988048. The cubic root of 201041001 is about 585.8164274516.

Adding to 201041001 its reverse (100140102), we get a palindrome (301181103).

The spelling of 201041001 in words is "two hundred one million, forty-one thousand, one".