111221212003 has 16 divisors (see below), whose sum is σ = 125533071360. Its totient is φ = 97610436000.

The previous prime is 111221211917. The next prime is 111221212007. The reversal of 111221212003 is 300212122111.

It is a de Polignac number, because none of the positive numbers 2^k-111221212003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111221212007) 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, 2911678 + ... + 2949628.

It is an arithmetic number, because the mean of its divisors is an integer number (7845816960).

Almost surely, 2^111221212003 is an apocalyptic number.

111221212003 is a deficient number, since it is larger than the sum of its proper divisors (14311859357).

111221212003 is a wasteful number, since it uses less digits than its factorization.

111221212003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47178.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 111221212003 its reverse (300212122111), we get a palindrome (411433334114).

The spelling of 111221212003 in words is "one hundred eleven billion, two hundred twenty-one million, two hundred twelve thousand, three".