201244121 has 8 divisors (see below), whose sum is σ = 216848520. Its totient is φ = 185657472.

The previous prime is 201244097. The next prime is 201244139. The reversal of 201244121 is 121442102.

It can be written as a sum of positive squares in 4 ways, for example, as 30680521 + 170563600 = 5539^2 + 13060^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201244121 - 2²⁶ = 134135257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201244121.

It is not an unprimeable number, because it can be changed into a prime (201244321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27875 + ... + 34343.

It is an arithmetic number, because the mean of its divisors is an integer number (27106065).

Almost surely, 2^201244121 is an apocalyptic number.

It is an amenable number.

201244121 is a deficient number, since it is larger than the sum of its proper divisors (15604399).

201244121 is a wasteful number, since it uses less digits than its factorization.

201244121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8875.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 201244121 is about 14186.0537500744. The cubic root of 201244121 is about 586.0136525298.

Adding to 201244121 its reverse (121442102), we get a palindrome (322686223).

The spelling of 201244121 in words is "two hundred one million, two hundred forty-four thousand, one hundred twenty-one".