222111112110 has 64 divisors (see below), whose sum is σ = 547689010752. Its totient is φ = 57606183936.

The previous prime is 222111112049. The next prime is 222111112151. The reversal of 222111112110 is 11211111222.

It is a happy number.

It is a super-2 number, since 2×222111112110² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 222111112110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2884632 + ... + 2960628.

It is an arithmetic number, because the mean of its divisors is an integer number (8557640793).

Almost surely, 2^222111112110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222111112110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273844505376).

222111112110 is an abundant number, since it is smaller than the sum of its proper divisors (325577898642).

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

222111112110 is a wasteful number, since it uses less digits than its factorization.

222111112110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78677.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 222111112110 its reverse (11211111222), we get a palindrome (233322223332).

It can be divided in two parts, 222111112 and 110, that added together give a palindrome (222111222).

The spelling of 222111112110 in words is "two hundred twenty-two billion, one hundred eleven million, one hundred twelve thousand, one hundred ten".