222110211220 has 12 divisors (see below), whose sum is σ = 466431443604. Its totient is φ = 88844084480.

The previous prime is 222110211181. The next prime is 222110211241. The reversal of 222110211220 is 22112011222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31724596996 + 190385614224 = 178114^2 + 436332^2 .

It is a junction number, because it is equal to n+sod(n) for n = 222110211194 and 222110211203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5552755261 + ... + 5552755300.

It is an arithmetic number, because the mean of its divisors is an integer number (38869286967).

Almost surely, 2^222110211220 is an apocalyptic number.

222110211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222110211220 is an abundant number, since it is smaller than the sum of its proper divisors (244321232384).

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

222110211220 is a wasteful number, since it uses less digits than its factorization.

222110211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11105510570 (or 11105510568 counting only the distinct ones).

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

Adding to 222110211220 its reverse (22112011222), we get a palindrome (244222222442).

It can be divided in two parts, 2221102 and 11220, that added together give a palindrome (2232322).

The spelling of 222110211220 in words is "two hundred twenty-two billion, one hundred ten million, two hundred eleven thousand, two hundred twenty".