222211022112 has 120 divisors (see below), whose sum is σ = 655877827836. Its totient is φ = 73802700288.

The previous prime is 222211022023. The next prime is 222211022113. The reversal of 222211022112 is 211220112222.

It is a happy number.

222211022112 is a `hidden beast` number, since 222 + 211 + 0 + 221 + 12 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 180118755216 + 42092266896 = 424404^2 + 205164^2 .

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

It is not an unprimeable number, because it can be changed into a prime (222211022113) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 563238 + ... + 872730.

Almost surely, 2^222211022112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222211022112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327938913918).

222211022112 is an abundant number, since it is smaller than the sum of its proper divisors (433666805724).

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

222211022112 is a wasteful number, since it uses less digits than its factorization.

222211022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309792 (or 309775 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222211022112 its reverse (211220112222), we get a palindrome (433431134334).

The spelling of 222211022112 in words is "two hundred twenty-two billion, two hundred eleven million, twenty-two thousand, one hundred twelve".