222222222220 has 24 divisors (see below), whose sum is σ = 466689132000. Its totient is φ = 88884609792.

The previous prime is 222222222169. The next prime is 222222222301. The reversal of 222222222220 is 22222222222.

It is a happy number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 222222222191 and 222222222200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176361 + ... + 689599.

It is an arithmetic number, because the mean of its divisors is an integer number (19445380500).

Almost surely, 2^222222222220 is an apocalyptic number.

222222222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222222222220 is an abundant number, since it is smaller than the sum of its proper divisors (244466909780).

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

222222222220 is a wasteful number, since it uses less digits than its factorization.

222222222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534897 (or 534895 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 222222222220 its reverse (22222222222), we get a palindrome (244444444442).

It can be divided in two parts, 2 and 22222222220, that added together give a palindrome (22222222222).

The spelling of 222222222220 in words is "two hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty".