112001221100 has 72 divisors (see below), whose sum is σ = 249260535888. Its totient is φ = 43656883200.

The previous prime is 112001221099. The next prime is 112001221231. The reversal of 112001221100 is 1122100211.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3604832 + ... + 3635768.

Almost surely, 2^112001221100 is an apocalyptic number.

112001221100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 112001221100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124630267944).

112001221100 is an abundant number, since it is smaller than the sum of its proper divisors (137259314788).

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

112001221100 is a wasteful number, since it uses less digits than its factorization.

112001221100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31875 (or 31868 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 112001221100 its reverse (1122100211), we get a palindrome (113123321311).

The spelling of 112001221100 in words is "one hundred twelve billion, one million, two hundred twenty-one thousand, one hundred".