111212110121103 has 12 divisors (see below), whose sum is σ = 162113473470520. Its totient is φ = 73461210354576.

The previous prime is 111212110121083. The next prime is 111212110121113. The reversal of 111212110121103 is 301121011212111.

It is not a de Polignac number, because 111212110121103 - 2⁶ = 111212110121039 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 (111212110121113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56683031701 + ... + 56683033662.

Almost surely, 2^{111212110121103} is an apocalyptic number.

111212110121103 is a deficient number, since it is larger than the sum of its proper divisors (50901363349417).

111212110121103 is a wasteful number, since it uses less digits than its factorization.

111212110121103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113366065478 (or 113366065475 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 18.

Adding to 111212110121103 its reverse (301121011212111), we get a palindrome (412333121333214).

The spelling of 111212110121103 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred ten million, one hundred twenty-one thousand, one hundred three".