201000210001 has 4 divisors (see below), whose sum is σ = 201048060004. Its totient is φ = 200952360000.

The previous prime is 201000209981. The next prime is 201000210007. The reversal of 201000210001 is 100012000102.

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 69274766401 + 131725443600 = 263201^2 + 362940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201000210001 is a prime.

It is a super-3 number, since 3×201000210001³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201000210007) 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, 23918700 + ... + 23927101.

It is an arithmetic number, because the mean of its divisors is an integer number (50262015001).

Almost surely, 2^201000210001 is an apocalyptic number.

It is an amenable number.

201000210001 is a deficient number, since it is larger than the sum of its proper divisors (47850003).

201000210001 is an equidigital number, since it uses as much as digits as its factorization.

201000210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47850002.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 201000210001 its reverse (100012000102), we get a palindrome (301012210103).

The spelling of 201000210001 in words is "two hundred one billion, two hundred ten thousand, one".