210000111001 has 4 divisors (see below), whose sum is σ = 212359662900. Its totient is φ = 207640559104.

The previous prime is 210000110993. The next prime is 210000111017. The reversal of 210000111001 is 100111000012.

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 54779870601 + 155220240400 = 234051^2 + 393980^2 .

It is a cyclic number.

It is not a de Polignac number, because 210000111001 - 2³ = 210000110993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210000111071) 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, 1179775816 + ... + 1179775993.

It is an arithmetic number, because the mean of its divisors is an integer number (53089915725).

Almost surely, 2^210000111001 is an apocalyptic number.

It is an amenable number.

210000111001 is a deficient number, since it is larger than the sum of its proper divisors (2359551899).

210000111001 is an equidigital number, since it uses as much as digits as its factorization.

210000111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2359551898.

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

Adding to 210000111001 its reverse (100111000012), we get a palindrome (310111111013).

The spelling of 210000111001 in words is "two hundred ten billion, one hundred eleven thousand, one".