221100200212100 has 144 divisors (see below), whose sum is σ = 550329186052800. Its totient is φ = 76355071296000.

The previous prime is 221100200212097. The next prime is 221100200212109. The reversal of 221100200212100 is 1212002001122.

It is not an unprimeable number, because it can be changed into a prime (221100200212109) 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 47 ways as a sum of consecutive naturals, for example, 54865910 + ... + 58757709.

It is an arithmetic number, because the mean of its divisors is an integer number (3821730458700).

Almost surely, 2^{221100200212100} is an apocalyptic number.

221100200212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221100200212100 is an abundant number, since it is smaller than the sum of its proper divisors (329228985840700).

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

221100200212100 is a wasteful number, since it uses less digits than its factorization.

221100200212100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113623734 (or 113623727 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221100200212100 its reverse (1212002001122), we get a palindrome (222312202213222).

The spelling of 221100200212100 in words is "two hundred twenty-one trillion, one hundred billion, two hundred million, two hundred twelve thousand, one hundred".