111211011020103 has 4 divisors (see below), whose sum is σ = 148281348026808. Its totient is φ = 74140674013400.

The previous prime is 111211011020047. The next prime is 111211011020117. The reversal of 111211011020103 is 301020110112111.

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 111211011020103 - 2¹⁶ = 111211010954567 is a prime.

It is a super-2 number, since 2×111211011020103² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211011020143) 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, 18535168503348 + ... + 18535168503353.

It is an arithmetic number, because the mean of its divisors is an integer number (37070337006702).

Almost surely, 2^{111211011020103} is an apocalyptic number.

111211011020103 is a deficient number, since it is larger than the sum of its proper divisors (37070337006705).

111211011020103 is an equidigital number, since it uses as much as digits as its factorization.

111211011020103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37070337006704.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 111211011020103 its reverse (301020110112111), we get a palindrome (412231121132214).

The spelling of 111211011020103 in words is "one hundred eleven trillion, two hundred eleven billion, eleven million, twenty thousand, one hundred three".