221100010110 has 96 divisors (see below), whose sum is σ = 657445314240. Its totient is φ = 50501574144.

The previous prime is 221100010067. The next prime is 221100010127. The reversal of 221100010110 is 11010001122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 221100010092 and 221100010101.

It is a congruent number.

It is an unprimeable number.

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, 777474 + ... + 1023066.

It is an arithmetic number, because the mean of its divisors is an integer number (6848388690).

Almost surely, 2^221100010110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221100010110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328722657120).

221100010110 is an abundant number, since it is smaller than the sum of its proper divisors (436345304130).

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

221100010110 is a wasteful number, since it uses less digits than its factorization.

221100010110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247042 (or 247039 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 221100010110 its reverse (11010001122), we get a palindrome (232110011232).

The spelling of 221100010110 in words is "two hundred twenty-one billion, one hundred million, ten thousand, one hundred ten".