221021110201112 has 128 divisors (see below), whose sum is σ = 473397951882240. Its totient is φ = 95836056422400.

The previous prime is 221021110201063. The next prime is 221021110201121. The reversal of 221021110201112 is 211102011120122.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2205595313 + ... + 2205695519.

It is an arithmetic number, because the mean of its divisors is an integer number (3698421499080).

Almost surely, 2^{221021110201112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221021110201112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236698975941120).

221021110201112 is an abundant number, since it is smaller than the sum of its proper divisors (252376841681128).

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

221021110201112 is a wasteful number, since it uses less digits than its factorization.

221021110201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102481 (or 102477 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221021110201112 its reverse (211102011120122), we get a palindrome (432123121321234).

The spelling of 221021110201112 in words is "two hundred twenty-one trillion, twenty-one billion, one hundred ten million, two hundred one thousand, one hundred twelve".