221110222120 has 64 divisors (see below), whose sum is σ = 503752867200. Its totient is φ = 87336748800.

The previous prime is 221110222111. The next prime is 221110222129. The reversal of 221110222120 is 21222011122.

It is a happy number.

221110222120 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221110222111) and next prime (221110222129).

It is a junction number, because it is equal to n+sod(n) for n = 221110222094 and 221110222103.

It is not an unprimeable number, because it can be changed into a prime (221110222129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1458957 + ... + 1603363.

It is an arithmetic number, because the mean of its divisors is an integer number (7871138550).

Almost surely, 2^221110222120 is an apocalyptic number.

221110222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221110222120 is an abundant number, since it is smaller than the sum of its proper divisors (282642645080).

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

221110222120 is a wasteful number, since it uses less digits than its factorization.

221110222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144898 (or 144894 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221110222120 its reverse (21222011122), we get a palindrome (242332233242).

The spelling of 221110222120 in words is "two hundred twenty-one billion, one hundred ten million, two hundred twenty-two thousand, one hundred twenty".