222200221220 has 12 divisors (see below), whose sum is σ = 466620464604. Its totient is φ = 88880088480.

The previous prime is 222200221213. The next prime is 222200221241. The reversal of 222200221220 is 22122002222.

It can be written as a sum of positive squares in 2 ways, for example, as 93818464804 + 128381756416 = 306298^2 + 358304^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5555005511 + ... + 5555005550.

It is an arithmetic number, because the mean of its divisors is an integer number (38885038717).

Almost surely, 2^222200221220 is an apocalyptic number.

222200221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222200221220 is an abundant number, since it is smaller than the sum of its proper divisors (244420243384).

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

222200221220 is a wasteful number, since it uses less digits than its factorization.

222200221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11110011070 (or 11110011068 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 222200221220 its reverse (22122002222), we get a palindrome (244322223442).

The spelling of 222200221220 in words is "two hundred twenty-two billion, two hundred million, two hundred twenty-one thousand, two hundred twenty".