221110120101112 has 96 divisors (see below), whose sum is σ = 460582945099200. Its totient is φ = 99428614560000.

The previous prime is 221110120101109. The next prime is 221110120101113. The reversal of 221110120101112 is 211101021011122.

It is a super-2 number, since 2×221110120101112² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221110120101113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119433814 + ... + 121271002.

It is an arithmetic number, because the mean of its divisors is an integer number (4797739011450).

Almost surely, 2^{221110120101112} is an apocalyptic number.

221110120101112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221110120101112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230291472549600).

221110120101112 is an abundant number, since it is smaller than the sum of its proper divisors (239472824998088).

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

221110120101112 is a wasteful number, since it uses less digits than its factorization.

221110120101112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838549 (or 1838534 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 221110120101112 its reverse (211101021011122), we get a palindrome (432211141112234).

The spelling of 221110120101112 in words is "two hundred twenty-one trillion, one hundred ten billion, one hundred twenty million, one hundred one thousand, one hundred twelve".