222210001220 has 24 divisors (see below), whose sum is σ = 467680311000. Its totient is φ = 88686036992.

The previous prime is 222210001219. The next prime is 222210001303. The reversal of 222210001220 is 22100012222.

It can be written as a sum of positive squares in 4 ways, for example, as 12240767044 + 209969234176 = 110638^2 + 458224^2 .

It is a junction number, because it is equal to n+sod(n) for n = 222210001195 and 222210001204.

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, 12363515 + ... + 12381474.

It is an arithmetic number, because the mean of its divisors is an integer number (19486679625).

Almost surely, 2^222210001220 is an apocalyptic number.

222210001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222210001220 is an abundant number, since it is smaller than the sum of its proper divisors (245470309780).

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

222210001220 is a wasteful number, since it uses less digits than its factorization.

222210001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24745447 (or 24745445 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 222210001220 its reverse (22100012222), we get a palindrome (244310013442).

It can be divided in two parts, 2 and 22210001220, that added together give a palindrome (22210001222).

The spelling of 222210001220 in words is "two hundred twenty-two billion, two hundred ten million, one thousand, two hundred twenty".