222220101222 has 96 divisors (see below), whose sum is σ = 573634473984. Its totient is φ = 60834888000.

The previous prime is 222220101217. The next prime is 222220101227. The reversal of 222220101222 is 222101022222.

222220101222 is a `hidden beast` number, since 222 + 220 + 1 + 0 + 1 + 222 = 666.

It is an interprime number because it is at equal distance from previous prime (222220101217) and next prime (222220101227).

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

It is a junction number, because it is equal to n+sod(n) for n = 222220101195 and 222220101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222220101227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 112863 + ... + 676149.

It is an arithmetic number, because the mean of its divisors is an integer number (5975359104).

Almost surely, 2^222220101222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222220101222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286817236992).

222220101222 is an abundant number, since it is smaller than the sum of its proper divisors (351414372762).

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

222220101222 is a wasteful number, since it uses less digits than its factorization.

222220101222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563434 (or 563431 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222220101222 its reverse (222101022222), we get a palindrome (444321123444).

The spelling of 222220101222 in words is "two hundred twenty-two billion, two hundred twenty million, one hundred one thousand, two hundred twenty-two".