2111020103 has 4 divisors (see below), whose sum is σ = 2134739520. Its totient is φ = 2087300688.

The previous prime is 2111020081. The next prime is 2111020129. The reversal of 2111020103 is 3010201112.

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

It is a cyclic number.

It is not a de Polignac number, because 2111020103 - 2⁶ = 2111020039 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 (2111020133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11859575 + ... + 11859752.

It is an arithmetic number, because the mean of its divisors is an integer number (533684880).

Almost surely, 2^2111020103 is an apocalyptic number.

2111020103 is a deficient number, since it is larger than the sum of its proper divisors (23719417).

2111020103 is an equidigital number, since it uses as much as digits as its factorization.

2111020103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23719416.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 2111020103 is about 45945.8387996127. The cubic root of 2111020103 is about 1282.8152762229.

Adding to 2111020103 its reverse (3010201112), we get a palindrome (5121221215).

The spelling of 2111020103 in words is "two billion, one hundred eleven million, twenty thousand, one hundred three".