201000101010001 has 4 divisors (see below), whose sum is σ = 201000217151412. Its totient is φ = 200999984868592.

The previous prime is 201000101009951. The next prime is 201000101010013. The reversal of 201000101010001 is 100010101000102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 102319698702400 + 98680402307601 = 10115320^2 + 9933801^2 .

It is a cyclic number.

It is not a de Polignac number, because 201000101010001 - 2²⁵ = 201000067455569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201000101010031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55434850 + ... + 58949323.

It is an arithmetic number, because the mean of its divisors is an integer number (50250054287853).

Almost surely, 2^{201000101010001} is an apocalyptic number.

It is an amenable number.

201000101010001 is a deficient number, since it is larger than the sum of its proper divisors (116141411).

201000101010001 is a wasteful number, since it uses less digits than its factorization.

201000101010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116141410.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 201000101010001 its reverse (100010101000102), we get a palindrome (301010202010103).

The spelling of 201000101010001 in words is "two hundred one trillion, one hundred one million, ten thousand, one".