201005121 has 8 divisors (see below), whose sum is σ = 268182880. Its totient is φ = 133915392.

The previous prime is 201005107. The next prime is 201005137. The reversal of 201005121 is 121500102.

201005121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 201005121 - 2¹¹ = 201003073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 201005097 and 201005106.

It is not an unprimeable number, because it can be changed into a prime (201006121) 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, 16480 + ... + 25953.

It is an arithmetic number, because the mean of its divisors is an integer number (33522860).

Almost surely, 2^201005121 is an apocalyptic number.

It is an amenable number.

201005121 is a deficient number, since it is larger than the sum of its proper divisors (67177759).

201005121 is a wasteful number, since it uses less digits than its factorization.

201005121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44015.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 201005121 is about 14177.6274813524. The cubic root of 201005121 is about 585.7815749525.

Adding to 201005121 its reverse (121500102), we get a palindrome (322505223).

The spelling of 201005121 in words is "two hundred one million, five thousand, one hundred twenty-one".