210001110001 has 4 divisors (see below), whose sum is σ = 210063078900. Its totient is φ = 209939141104.

The previous prime is 210001109999. The next prime is 210001110031. The reversal of 210001110001 is 100011100012.

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 181169409600 + 28831700401 = 425640^2 + 169799^2 .

It is a cyclic number.

It is not a de Polignac number, because 210001110001 - 2¹ = 210001109999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210001110031) 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, 30979366 + ... + 30986143.

It is an arithmetic number, because the mean of its divisors is an integer number (52515769725).

Almost surely, 2^210001110001 is an apocalyptic number.

It is an amenable number.

210001110001 is a deficient number, since it is larger than the sum of its proper divisors (61968899).

210001110001 is an equidigital number, since it uses as much as digits as its factorization.

210001110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61968898.

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

Adding to 210001110001 its reverse (100011100012), we get a palindrome (310012210013).

It can be divided in two parts, 2 and 10001110001, that multiplied together give a palindrome (20002220002).

The spelling of 210001110001 in words is "two hundred ten billion, one million, one hundred ten thousand, one".