221200211110100 has 72 divisors (see below), whose sum is σ = 485555602119168. Its totient is φ = 87459718608000.

The previous prime is 221200211110013. The next prime is 221200211110111. The reversal of 221200211110100 is 1011112002122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11909672 + ... + 24171071.

Almost surely, 2^{221200211110100} is an apocalyptic number.

221200211110100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221200211110100 is an abundant number, since it is smaller than the sum of its proper divisors (264355391009068).

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

221200211110100 is a wasteful number, since it uses less digits than its factorization.

221200211110100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36081465 (or 36081458 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221200211110100 its reverse (1011112002122), we get a palindrome (222211323112222).

The spelling of 221200211110100 in words is "two hundred twenty-one trillion, two hundred billion, two hundred eleven million, one hundred ten thousand, one hundred".