111211206103 has 2 divisors, whose sum is σ = 111211206104. Its totient is φ = 111211206102.

The previous prime is 111211206083. The next prime is 111211206107. The reversal of 111211206103 is 301602112111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111211206103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111211206107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55605603051 + 55605603052.

It is an arithmetic number, because the mean of its divisors is an integer number (55605603052).

Almost surely, 2^111211206103 is an apocalyptic number.

111211206103 is a deficient number, since it is larger than the sum of its proper divisors (1).

111211206103 is an equidigital number, since it uses as much as digits as its factorization.

111211206103 is an odious number, because the sum of its binary digits is odd.

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

Adding to 111211206103 its reverse (301602112111), we get a palindrome (412813318214).

The spelling of 111211206103 in words is "one hundred eleven billion, two hundred eleven million, two hundred six thousand, one hundred three".