201040121 has 12 divisors (see below), whose sum is σ = 214746000. Its totient is φ = 187687080.

The previous prime is 201040117. The next prime is 201040123. The reversal of 201040121 is 121040102.

It is not a de Polignac number, because 201040121 - 2² = 201040117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201040123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94730 + ... + 96828.

It is an arithmetic number, because the mean of its divisors is an integer number (17895500).

Almost surely, 2^201040121 is an apocalyptic number.

It is an amenable number.

201040121 is a deficient number, since it is larger than the sum of its proper divisors (13705879).

201040121 is an equidigital number, since it uses as much as digits as its factorization.

201040121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260 (or 2189 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 201040121 is about 14178.8617667287. The cubic root of 201040121 is about 585.8155727019.

Adding to 201040121 its reverse (121040102), we get a palindrome (322080223).

The spelling of 201040121 in words is "two hundred one million, forty thousand, one hundred twenty-one".