221112001110 has 768 divisors, whose sum is σ = 749900390400. Its totient is φ = 40564592640.

The previous prime is 221112001091. The next prime is 221112001157. The reversal of 221112001110 is 11100211122.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 965554476 + ... + 965554704.

It is an arithmetic number, because the mean of its divisors is an integer number (976432800).

Almost surely, 2^221112001110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221112001110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (374950195200).

221112001110 is an abundant number, since it is smaller than the sum of its proper divisors (528788389290).

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

221112001110 is a wasteful number, since it uses less digits than its factorization.

221112001110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 221112001110 its reverse (11100211122), we get a palindrome (232212212232).

The spelling of 221112001110 in words is "two hundred twenty-one billion, one hundred twelve million, one thousand, one hundred ten".