210000002111 has 4 divisors (see below), whose sum is σ = 215121953424. Its totient is φ = 204878050800.

The previous prime is 210000002059. The next prime is 210000002137. The reversal of 210000002111 is 111200000012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210000002111 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 (210000002711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2560975595 + ... + 2560975676.

It is an arithmetic number, because the mean of its divisors is an integer number (53780488356).

Almost surely, 2^210000002111 is an apocalyptic number.

210000002111 is a deficient number, since it is larger than the sum of its proper divisors (5121951313).

210000002111 is an equidigital number, since it uses as much as digits as its factorization.

210000002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5121951312.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 210000002111 its reverse (111200000012), we get a palindrome (321200002123).

The spelling of 210000002111 in words is "two hundred ten billion, two thousand, one hundred eleven".