200102100001 has 4 divisors (see below), whose sum is σ = 200880707652. Its totient is φ = 199323492352.

The previous prime is 200102099999. The next prime is 200102100019. The reversal of 200102100001 is 100001201002.

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 185286341601 + 14815758400 = 430449^2 + 121720^2 .

It is a cyclic number.

It is not a de Polignac number, because 200102100001 - 2¹ = 200102099999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200102100031) 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, 389303440 + ... + 389303953.

It is an arithmetic number, because the mean of its divisors is an integer number (50220176913).

Almost surely, 2^200102100001 is an apocalyptic number.

It is an amenable number.

200102100001 is a deficient number, since it is larger than the sum of its proper divisors (778607651).

200102100001 is an equidigital number, since it uses as much as digits as its factorization.

200102100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778607650.

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

Adding to 200102100001 its reverse (100001201002), we get a palindrome (300103301003).

The spelling of 200102100001 in words is "two hundred billion, one hundred two million, one hundred thousand, one".