221110112120 has 16 divisors (see below), whose sum is σ = 497497752360. Its totient is φ = 88444044832.

The previous prime is 221110112017. The next prime is 221110112123. The reversal of 221110112120 is 21211011122.

It is a junction number, because it is equal to n+sod(n) for n = 221110112095 and 221110112104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221110112123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2763876362 + ... + 2763876441.

Almost surely, 2^221110112120 is an apocalyptic number.

221110112120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221110112120 is an abundant number, since it is smaller than the sum of its proper divisors (276387640240).

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

221110112120 is a wasteful number, since it uses less digits than its factorization.

221110112120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5527752814 (or 5527752810 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221110112120 its reverse (21211011122), we get a palindrome (242321123242).

The spelling of 221110112120 in words is "two hundred twenty-one billion, one hundred ten million, one hundred twelve thousand, one hundred twenty".