222220260 has 120 divisors (see below), whose sum is σ = 738211320. Its totient is φ = 55766016.

The previous prime is 222220253. The next prime is 222220279. The reversal of 222220260 is 62022222.

It can be written as a sum of positive squares in 4 ways, for example, as 2232036 + 219988224 = 1494^2 + 14832^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 23506 + ... + 31574.

It is an arithmetic number, because the mean of its divisors is an integer number (6151761).

Almost surely, 2^222220260 is an apocalyptic number.

222220260 is a gapful number since it is divisible by the number (20) 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 222220260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369105660).

222220260 is an abundant number, since it is smaller than the sum of its proper divisors (515991060).

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

222220260 is a wasteful number, since it uses less digits than its factorization.

222220260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8107 (or 8096 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 222220260 is about 14907.0540349192. The cubic root of 222220260 is about 605.7050814749.

Adding to 222220260 its reverse (62022222), we get a palindrome (284242482).

The spelling of 222220260 in words is "two hundred twenty-two million, two hundred twenty thousand, two hundred sixty".