111221222111983 has 4 divisors (see below), whose sum is σ = 111278287902600. Its totient is φ = 111164156321368.

The previous prime is 111221222111869. The next prime is 111221222112059. The reversal of 111221222111983 is 389111222122111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111221222111983 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 (111221222711983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28532892385 + ... + 28532896282.

It is an arithmetic number, because the mean of its divisors is an integer number (27819571975650).

Almost surely, 2^{111221222111983} is an apocalyptic number.

111221222111983 is a deficient number, since it is larger than the sum of its proper divisors (57065790617).

111221222111983 is an equidigital number, since it uses as much as digits as its factorization.

111221222111983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57065790616.

The product of its digits is 6912, while the sum is 37.

The spelling of 111221222111983 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred eleven thousand, nine hundred eighty-three".