211111031200103 has 4 divisors (see below), whose sum is σ = 220289771687088. Its totient is φ = 201932290713120.

The previous prime is 211111031200081. The next prime is 211111031200123. The reversal of 211111031200103 is 301002130111112.

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 211111031200103 - 2²² = 211111027005799 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 (211111031200123) 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, 4589370243458 + ... + 4589370243503.

It is an arithmetic number, because the mean of its divisors is an integer number (55072442921772).

Almost surely, 2^{211111031200103} is an apocalyptic number.

211111031200103 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

211111031200103 is a deficient number, since it is larger than the sum of its proper divisors (9178740486985).

211111031200103 is an equidigital number, since it uses as much as digits as its factorization.

211111031200103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9178740486984.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 211111031200103 its reverse (301002130111112), we get a palindrome (512113161311215).

The spelling of 211111031200103 in words is "two hundred eleven trillion, one hundred eleven billion, thirty-one million, two hundred thousand, one hundred three".