211111303110103 has 4 divisors (see below), whose sum is σ = 230303239756488. Its totient is φ = 191919366463720.

The previous prime is 211111303110049. The next prime is 211111303110107. The reversal of 211111303110103 is 301011303111112.

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 211111303110103 - 2²¹ = 211111301012951 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 (211111303110107) 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, 9595968323176 + ... + 9595968323197.

It is an arithmetic number, because the mean of its divisors is an integer number (57575809939122).

Almost surely, 2^{211111303110103} is an apocalyptic number.

211111303110103 is a deficient number, since it is larger than the sum of its proper divisors (19191936646385).

211111303110103 is a wasteful number, since it uses less digits than its factorization.

211111303110103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19191936646384.

The product of its (nonzero) digits is 54, while the sum is 19.

Adding to 211111303110103 its reverse (301011303111112), we get a palindrome (512122606221215).

The spelling of 211111303110103 in words is "two hundred eleven trillion, one hundred eleven billion, three hundred three million, one hundred ten thousand, one hundred three".