222000221220 has 24 divisors (see below), whose sum is σ = 621600619584. Its totient is φ = 59200058976.

The previous prime is 222000221203. The next prime is 222000221237. The reversal of 222000221220 is 22122000222.

It is an interprime number because it is at equal distance from previous prime (222000221203) and next prime (222000221237).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 222000221220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1850001784 + ... + 1850001903.

It is an arithmetic number, because the mean of its divisors is an integer number (25900025816).

Almost surely, 2^222000221220 is an apocalyptic number.

222000221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222000221220 is an abundant number, since it is smaller than the sum of its proper divisors (399600398364).

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

222000221220 is a wasteful number, since it uses less digits than its factorization.

222000221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3700003699 (or 3700003697 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 222000221220 its reverse (22122000222), we get a palindrome (244122221442).

The spelling of 222000221220 in words is "two hundred twenty-two billion, two hundred twenty-one thousand, two hundred twenty".