111213112103 has 4 divisors (see below), whose sum is σ = 111451256280. Its totient is φ = 110974967928.

The previous prime is 111213112099. The next prime is 111213112121. The reversal of 111213112103 is 301211312111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301211312111 = 475051 ⋅634061.

It is a cyclic number.

It is not a de Polignac number, because 111213112103 - 2² = 111213112099 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 (111213102103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119071388 + ... + 119072321.

It is an arithmetic number, because the mean of its divisors is an integer number (27862814070).

Almost surely, 2^111213112103 is an apocalyptic number.

111213112103 is a deficient number, since it is larger than the sum of its proper divisors (238144177).

111213112103 is an equidigital number, since it uses as much as digits as its factorization.

111213112103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238144176.

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

Adding to 111213112103 its reverse (301211312111), we get a palindrome (412424424214).

The spelling of 111213112103 in words is "one hundred eleven billion, two hundred thirteen million, one hundred twelve thousand, one hundred three".