100001201210101 has 4 divisors (see below), whose sum is σ = 100001221770604. Its totient is φ = 100001180649600.

The previous prime is 100001201210093. The next prime is 100001201210143. The reversal of 100001201210101 is 101012102100001.

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 62271447783076 + 37729753427025 = 7891226^2 + 6142455^2 .

It is a cyclic number.

It is not a de Polignac number, because 100001201210101 - 2³ = 100001201210093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100001207210101) 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, 1564471 + ... + 14228491.

It is an arithmetic number, because the mean of its divisors is an integer number (25000305442651).

Almost surely, 2^{100001201210101} is an apocalyptic number.

It is an amenable number.

100001201210101 is a deficient number, since it is larger than the sum of its proper divisors (20560503).

100001201210101 is an equidigital number, since it uses as much as digits as its factorization.

100001201210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20560502.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 100001201210101 its reverse (101012102100001), we get a palindrome (201013303310102).

The spelling of 100001201210101 in words is "one hundred trillion, one billion, two hundred one million, two hundred ten thousand, one hundred one".