221201110200100 has 18 divisors (see below), whose sum is σ = 480006409134434. Its totient is φ = 88480444080000.

The previous prime is 221201110200097. The next prime is 221201110200113. The reversal of 221201110200100 is 1002011102122.

221201110200100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1984244111424 + 219216866088676 = 1408632^2 + 14805974^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1106005550901 + ... + 1106005551100.

Almost surely, 2^{221201110200100} is an apocalyptic number.

221201110200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221201110200100 is an abundant number, since it is smaller than the sum of its proper divisors (258805298934334).

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

221201110200100 is a wasteful number, since it uses less digits than its factorization.

221201110200100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212011102015 (or 2212011102008 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221201110200100 its reverse (1002011102122), we get a palindrome (222203121302222).

The spelling of 221201110200100 in words is "two hundred twenty-one trillion, two hundred one billion, one hundred ten million, two hundred thousand, one hundred".