111111221003 has 4 divisors (see below), whose sum is σ = 111409106688. Its totient is φ = 110813335320.

The previous prime is 111111220951. The next prime is 111111221059. The reversal of 111111221003 is 300122111111.

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 111111221003 - 2²² = 111107026699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111111221063) 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, 148942283 + ... + 148943028.

It is an arithmetic number, because the mean of its divisors is an integer number (27852276672).

Almost surely, 2^111111221003 is an apocalyptic number.

111111221003 is a deficient number, since it is larger than the sum of its proper divisors (297885685).

111111221003 is an equidigital number, since it uses as much as digits as its factorization.

111111221003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297885684.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 111111221003 its reverse (300122111111), we get a palindrome (411233332114).

The spelling of 111111221003 in words is "one hundred eleven billion, one hundred eleven million, two hundred twenty-one thousand, three".