227222220 has 48 divisors (see below), whose sum is σ = 638533728. Its totient is φ = 60372480.

The previous prime is 227222213. The next prime is 227222243. The reversal of 227222220 is 22222722.

227222220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10122 + ... + 23598.

It is an arithmetic number, because the mean of its divisors is an integer number (13302786).

Almost surely, 2^227222220 is an apocalyptic number.

227222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

227222220 is an abundant number, since it is smaller than the sum of its proper divisors (411311508).

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

227222220 is a wasteful number, since it uses less digits than its factorization.

227222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13770 (or 13768 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 227222220 is about 15073.8919990824. The cubic root of 227222220 is about 610.2160123620.

Adding to 227222220 its reverse (22222722), we get a palindrome (249444942).

It can be divided in two parts, 22722 and 2220, that added together give a palindrome (24942).

The spelling of 227222220 in words is "two hundred twenty-seven million, two hundred twenty-two thousand, two hundred twenty".