111220002011 has 4 divisors (see below), whose sum is σ = 111220669800. Its totient is φ = 111219334224.

The previous prime is 111220001989. The next prime is 111220002013. The reversal of 111220002011 is 110200022111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 111220002011 - 2¹⁰ = 111220000987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111220001983 and 111220002001.

It is not an unprimeable number, because it can be changed into a prime (111220002013) 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, 142520 + ... + 492698.

It is an arithmetic number, because the mean of its divisors is an integer number (27805167450).

Almost surely, 2^111220002011 is an apocalyptic number.

111220002011 is a deficient number, since it is larger than the sum of its proper divisors (667789).

111220002011 is an equidigital number, since it uses as much as digits as its factorization.

111220002011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667788.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 111220002011 its reverse (110200022111), we get a palindrome (221420024122).

The spelling of 111220002011 in words is "one hundred eleven billion, two hundred twenty million, two thousand, eleven".