220222220 has 24 divisors (see below), whose sum is σ = 470307600. Its totient is φ = 86595392.

The previous prime is 220222181. The next prime is 220222231. The reversal of 220222220 is 22222022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 220222195 and 220222204.

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, 92135 + ... + 94494.

It is an arithmetic number, because the mean of its divisors is an integer number (19596150).

Almost surely, 2^220222220 is an apocalyptic number.

220222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220222220 is an abundant number, since it is smaller than the sum of its proper divisors (250085380).

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

220222220 is a wasteful number, since it uses less digits than its factorization.

220222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186697 (or 186695 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 220222220 is about 14839.8861181614. The cubic root of 220222220 is about 603.8842628701.

Adding to 220222220 its reverse (22222022), we get a palindrome (242444242).

It can be divided in two parts, 22022 and 2220, that added together give a palindrome (24242).

The spelling of 220222220 in words is "two hundred twenty million, two hundred twenty-two thousand, two hundred twenty".