111232220100 has 72 divisors (see below), whose sum is σ = 321886585440. Its totient is φ = 29656884480.

The previous prime is 111232220093. The next prime is 111232220111. The reversal of 111232220100 is 1022232111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111232220100.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1942479 + ... + 1998921.

It is an arithmetic number, because the mean of its divisors is an integer number (4470647020).

Almost surely, 2^111232220100 is an apocalyptic number.

111232220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111232220100 is an abundant number, since it is smaller than the sum of its proper divisors (210654365340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111232220100 is a wasteful number, since it uses less digits than its factorization.

111232220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63029 (or 63022 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 111232220100 its reverse (1022232111), we get a palindrome (112254452211).

The spelling of 111232220100 in words is "one hundred eleven billion, two hundred thirty-two million, two hundred twenty thousand, one hundred".