221000100112 has 40 divisors (see below), whose sum is σ = 467147109600. Its totient is φ = 100447438080.

The previous prime is 221000100109. The next prime is 221000100169. The reversal of 221000100112 is 211001000122.

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 7 ways as a sum of consecutive naturals, for example, 3035043 + ... + 3107005.

It is an arithmetic number, because the mean of its divisors is an integer number (11678677740).

Almost surely, 2^221000100112 is an apocalyptic number.

221000100112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221000100112 is an abundant number, since it is smaller than the sum of its proper divisors (246147009488).

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

221000100112 is a wasteful number, since it uses less digits than its factorization.

221000100112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89431 (or 89425 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 221000100112 its reverse (211001000122), we get a palindrome (432001100234).

The spelling of 221000100112 in words is "two hundred twenty-one billion, one hundred thousand, one hundred twelve".