111221102111 has 8 divisors (see below), whose sum is σ = 127114187904. Its totient is φ = 95329105560.

The previous prime is 111221102059. The next prime is 111221102117. The reversal of 111221102111 is 111201122111.

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 111221102111 - 2¹⁴ = 111221085727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221102117) 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, 40325 + ... + 473358.

It is an arithmetic number, because the mean of its divisors is an integer number (15889273488).

Almost surely, 2^111221102111 is an apocalyptic number.

111221102111 is a deficient number, since it is larger than the sum of its proper divisors (15893085793).

111221102111 is an equidigital number, since it uses as much as digits as its factorization.

111221102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544621.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111221102111 its reverse (111201122111), we get a palindrome (222422224222).

The spelling of 111221102111 in words is "one hundred eleven billion, two hundred twenty-one million, one hundred two thousand, one hundred eleven".