111012111003 has 4 divisors (see below), whose sum is σ = 148016148008. Its totient is φ = 74008074000.

The previous prime is 111012110999. The next prime is 111012111017. The reversal of 111012111003 is 300111210111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300111210111 = 3 ⋅100037070037.

It is not a de Polignac number, because 111012111003 - 2² = 111012110999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111012111003.

It is not an unprimeable number, because it can be changed into a prime (111012111073) 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, 18502018498 + ... + 18502018503.

It is an arithmetic number, because the mean of its divisors is an integer number (37004037002).

Almost surely, 2^111012111003 is an apocalyptic number.

111012111003 is a deficient number, since it is larger than the sum of its proper divisors (37004037005).

111012111003 is an equidigital number, since it uses as much as digits as its factorization.

111012111003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37004037004.

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 111012111003 its reverse (300111210111), we get a palindrome (411123321114).

The spelling of 111012111003 in words is "one hundred eleven billion, twelve million, one hundred eleven thousand, three".