221244100110 has 128 divisors (see below), whose sum is σ = 681479308800. Its totient is φ = 50479925760.

The previous prime is 221244100087. The next prime is 221244100139. The reversal of 221244100110 is 11001442122.

221244100110 is a `hidden beast` number, since 2 + 212 + 441 + 0 + 0 + 1 + 10 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 2140480 + ... + 2241459.

It is an arithmetic number, because the mean of its divisors is an integer number (5324057100).

Almost surely, 2^221244100110 is an apocalyptic number.

221244100110 is an abundant number, since it is smaller than the sum of its proper divisors (460235208690).

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

221244100110 is a wasteful number, since it uses less digits than its factorization.

221244100110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4381983 (or 4381977 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221244100110 its reverse (11001442122), we get a palindrome (232245542232).

The spelling of 221244100110 in words is "two hundred twenty-one billion, two hundred forty-four million, one hundred thousand, one hundred ten".