212100112001 has 4 divisors (see below), whose sum is σ = 212105311572. Its totient is φ = 212094912432.

The previous prime is 212100111947. The next prime is 212100112013. The reversal of 212100112001 is 100211001212.

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 100854515776 + 111245596225 = 317576^2 + 333535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212100112001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212100112031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2538110 + ... + 2620343.

It is an arithmetic number, because the mean of its divisors is an integer number (53026327893).

Almost surely, 2^212100112001 is an apocalyptic number.

It is an amenable number.

212100112001 is a deficient number, since it is larger than the sum of its proper divisors (5199571).

212100112001 is an equidigital number, since it uses as much as digits as its factorization.

212100112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5199570.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 212100112001 its reverse (100211001212), we get a palindrome (312311113213).

The spelling of 212100112001 in words is "two hundred twelve billion, one hundred million, one hundred twelve thousand, one".