222123220110 has 128 divisors (see below), whose sum is σ = 646423372800. Its totient is φ = 53827493760.

The previous prime is 222123220087. The next prime is 222123220139. The reversal of 222123220110 is 11022321222.

222123220110 is a `hidden beast` number, since 2 + 221 + 232 + 201 + 10 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8650671 + ... + 8676309.

It is an arithmetic number, because the mean of its divisors is an integer number (5050182600).

Almost surely, 2^222123220110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222123220110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323211686400).

222123220110 is an abundant number, since it is smaller than the sum of its proper divisors (424300152690).

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

222123220110 is a wasteful number, since it uses less digits than its factorization.

222123220110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28583 (or 28577 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 222123220110 its reverse (11022321222), we get a palindrome (233145541332).

The spelling of 222123220110 in words is "two hundred twenty-two billion, one hundred twenty-three million, two hundred twenty thousand, one hundred ten".