111221222122111 has 32 divisors (see below), whose sum is σ = 116539944652800. Its totient is φ = 105943918164480.

The previous prime is 111221222121991. The next prime is 111221222122141.

111221222122111 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 111221222122111 - 2³⁵ = 111186862383743 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 (111221222122141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11420184280 + ... + 11420194018.

It is an arithmetic number, because the mean of its divisors is an integer number (3641873270400).

Almost surely, 2^{111221222122111} is an apocalyptic number.

111221222122111 is a deficient number, since it is larger than the sum of its proper divisors (5318722530689).

111221222122111 is a wasteful number, since it uses less digits than its factorization.

111221222122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12279.

The product of its digits is 128, while the sum is 22.

The spelling of 111221222122111 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred eleven".