111223467891 has 6 divisors (see below), whose sum is σ = 160656120300. Its totient is φ = 74148978588.

The previous prime is 111223467791. The next prime is 111223467917. The reversal of 111223467891 is 198764322111.

It is not a de Polignac number, because 111223467891 - 2¹⁰ = 111223466867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111223467791) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6179081541 + ... + 6179081558.

It is an arithmetic number, because the mean of its divisors is an integer number (26776020050).

Almost surely, 2^111223467891 is an apocalyptic number.

111223467891 is a deficient number, since it is larger than the sum of its proper divisors (49432652409).

111223467891 is a wasteful number, since it uses less digits than its factorization.

111223467891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12358163105 (or 12358163102 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The spelling of 111223467891 in words is "one hundred eleven billion, two hundred twenty-three million, four hundred sixty-seven thousand, eight hundred ninety-one".