222222002220 has 288 divisors, whose sum is σ = 710059301952. Its totient is φ = 56184274944.

The previous prime is 222222002159. The next prime is 222222002273. The reversal of 222222002220 is 22200222222.

222222002220 is a `hidden beast` number, since 2 + 222 + 220 + 0 + 2 + 220 = 666.

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 = 222222002193 and 222222002202.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 192733164 + ... + 192734316.

Almost surely, 2^222222002220 is an apocalyptic number.

222222002220 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 222222002220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355029650976).

222222002220 is an abundant number, since it is smaller than the sum of its proper divisors (487837299732).

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

222222002220 is a wasteful number, since it uses less digits than its factorization.

222222002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921 (or 1916 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 222222002220 its reverse (22200222222), we get a palindrome (244422224442).

It can be divided in two parts, 222222002 and 220, that added together give a palindrome (222222222).

The spelling of 222222002220 in words is "two hundred twenty-two billion, two hundred twenty-two million, two thousand, two hundred twenty".