111101222011 has 8 divisors (see below), whose sum is σ = 119658767760. Its totient is φ = 102545290272.

The previous prime is 111101221991. The next prime is 111101222021. The reversal of 111101222011 is 110222101111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111101222011 - 2⁹ = 111101221499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111101221982 and 111101222000.

It is not an unprimeable number, because it can be changed into a prime (111101222021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258601 + ... + 537658.

It is an arithmetic number, because the mean of its divisors is an integer number (14957345970).

Almost surely, 2^111101222011 is an apocalyptic number.

111101222011 is a deficient number, since it is larger than the sum of its proper divisors (8557545749).

111101222011 is a wasteful number, since it uses less digits than its factorization.

111101222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807005.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111101222011 its reverse (110222101111), we get a palindrome (221323323122).

The spelling of 111101222011 in words is "one hundred eleven billion, one hundred one million, two hundred twenty-two thousand, eleven".