222211211112 has 256 divisors, whose sum is σ = 690755788800. Its totient is φ = 65605800960.

The previous prime is 222211211093. The next prime is 222211211129. The reversal of 222211211112 is 211112112222.

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

It is a nude number because it is divisible by every one of its digits.

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, 44236233 + ... + 44241255.

It is an arithmetic number, because the mean of its divisors is an integer number (2698264800).

Almost surely, 2^222211211112 is an apocalyptic number.

222211211112 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 222211211112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345377894400).

222211211112 is an abundant number, since it is smaller than the sum of its proper divisors (468544577688).

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

222211211112 is a wasteful number, since it uses less digits than its factorization.

222211211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5525 (or 5515 counting only the distinct ones).

The product of its digits is 64, while the sum is 18.

Adding to 222211211112 its reverse (211112112222), we get a palindrome (433323323334).

The spelling of 222211211112 in words is "two hundred twenty-two billion, two hundred eleven million, two hundred eleven thousand, one hundred twelve".