222117852 has 144 divisors (see below), whose sum is σ = 624589056. Its totient is φ = 60710400.

The previous prime is 222117851. The next prime is 222117853. The reversal of 222117852 is 258711222.

222117852 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (222117851) and next prime (222117853).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222117851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2156433 + ... + 2156535.

It is an arithmetic number, because the mean of its divisors is an integer number (4337424).

Almost surely, 2^222117852 is an apocalyptic number.

222117852 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 222117852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312294528).

222117852 is an abundant number, since it is smaller than the sum of its proper divisors (402471204).

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

222117852 is a wasteful number, since it uses less digits than its factorization.

222117852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 167 counting only the distinct ones).

The product of its digits is 4480, while the sum is 30.

The square root of 222117852 is about 14903.6187551883. The cubic root of 222117852 is about 605.6120227878.

The spelling of 222117852 in words is "two hundred twenty-two million, one hundred seventeen thousand, eight hundred fifty-two".