221011011101112 has 32 divisors (see below), whose sum is σ = 552529130976000. Its totient is φ = 73670123270624.

The previous prime is 221011011101071. The next prime is 221011011101119. The reversal of 221011011101112 is 211101110110122.

It is a junction number, because it is equal to n+sod(n) for n = 221011011101091 and 221011011101100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221011011101119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4804818 + ... + 21566369.

It is an arithmetic number, because the mean of its divisors is an integer number (17266535343000).

Almost surely, 2^{221011011101112} is an apocalyptic number.

It is an amenable number.

221011011101112 is an abundant number, since it is smaller than the sum of its proper divisors (331518119874888).

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

221011011101112 is a wasteful number, since it uses less digits than its factorization.

221011011101112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26720395 (or 26720391 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 221011011101112 its reverse (211101110110122), we get a palindrome (432112121211234).

The spelling of 221011011101112 in words is "two hundred twenty-one trillion, eleven billion, eleven million, one hundred one thousand, one hundred twelve".