111221100003 has 16 divisors (see below), whose sum is σ = 159978904736. Its totient is φ = 68325120000.

The previous prime is 111221099993. The next prime is 111221100017. The reversal of 111221100003 is 300001122111.

It is not a de Polignac number, because 111221100003 - 2⁵ = 111221099971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111221100083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2448748 + ... + 2493753.

It is an arithmetic number, because the mean of its divisors is an integer number (9998681546).

Almost surely, 2^111221100003 is an apocalyptic number.

111221100003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

111221100003 is a deficient number, since it is larger than the sum of its proper divisors (48757804733).

111221100003 is a wasteful number, since it uses less digits than its factorization.

111221100003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4943094.

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

Adding to 111221100003 its reverse (300001122111), we get a palindrome (411222222114).

The spelling of 111221100003 in words is "one hundred eleven billion, two hundred twenty-one million, one hundred thousand, three".