111221110003 has 2 divisors, whose sum is σ = 111221110004. Its totient is φ = 111221110002.

The previous prime is 111221110001. The next prime is 111221110031. The reversal of 111221110003 is 300011122111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111221110003 - 2¹ = 111221110001 is a prime.

Together with 111221110001, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (111221110001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610555001 + 55610555002.

It is an arithmetic number, because the mean of its divisors is an integer number (55610555002).

Almost surely, 2^111221110003 is an apocalyptic number.

111221110003 is a deficient number, since it is larger than the sum of its proper divisors (1).

111221110003 is an equidigital number, since it uses as much as digits as its factorization.

111221110003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 111221110003 its reverse (300011122111), we get a palindrome (411232232114).

The spelling of 111221110003 in words is "one hundred eleven billion, two hundred twenty-one million, one hundred ten thousand, three".