111123021130 has 32 divisors (see below), whose sum is σ = 218218976640. Its totient is φ = 40405821120.

The previous prime is 111123021103. The next prime is 111123021133. The reversal of 111123021130 is 31120321111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (111123021133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3220027 + ... + 3254353.

It is an arithmetic number, because the mean of its divisors is an integer number (6819343020).

Almost surely, 2^111123021130 is an apocalyptic number.

111123021130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111123021130 is a deficient number, since it is larger than the sum of its proper divisors (107095955510).

111123021130 is a wasteful number, since it uses less digits than its factorization.

111123021130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63774.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 111123021130 its reverse (31120321111), we get a palindrome (142243342241).

The spelling of 111123021130 in words is "one hundred eleven billion, one hundred twenty-three million, twenty-one thousand, one hundred thirty".