111001321111 has 4 divisors (see below), whose sum is σ = 111038312224. Its totient is φ = 110964330000.

The previous prime is 111001321103. The next prime is 111001321117. The reversal of 111001321111 is 111123100111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111123100111 = 67 ⋅1658553733.

It is a cyclic number.

It is not a de Polignac number, because 111001321111 - 2³ = 111001321103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111001321091 and 111001321100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111001321117) 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, 18491055 + ... + 18497056.

It is an arithmetic number, because the mean of its divisors is an integer number (27759578056).

Almost surely, 2^111001321111 is an apocalyptic number.

111001321111 is a deficient number, since it is larger than the sum of its proper divisors (36991113).

111001321111 is an equidigital number, since it uses as much as digits as its factorization.

111001321111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36991112.

The product of its (nonzero) digits is 6, while the sum is 13.

Adding to 111001321111 its reverse (111123100111), we get a palindrome (222124421222).

The spelling of 111001321111 in words is "one hundred eleven billion, one million, three hundred twenty-one thousand, one hundred eleven".