211111202310103 has 4 divisors (see below), whose sum is σ = 216020765154568. Its totient is φ = 206201639465640.

The previous prime is 211111202310077. The next prime is 211111202310149. The reversal of 211111202310103 is 301013202111112.

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-211111202310103 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 (211111202310703) 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, 2454781422168 + ... + 2454781422253.

It is an arithmetic number, because the mean of its divisors is an integer number (54005191288642).

Almost surely, 2^{211111202310103} is an apocalyptic number.

211111202310103 is a deficient number, since it is larger than the sum of its proper divisors (4909562844465).

211111202310103 is an equidigital number, since it uses as much as digits as its factorization.

211111202310103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4909562844464.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 211111202310103 its reverse (301013202111112), we get a palindrome (512124404421215).

The spelling of 211111202310103 in words is "two hundred eleven trillion, one hundred eleven billion, two hundred two million, three hundred ten thousand, one hundred three".