220221021122 has 16 divisors (see below), whose sum is σ = 333750228120. Its totient is φ = 108973842432.

The previous prime is 220221021073. The next prime is 220221021173. The reversal of 220221021122 is 221120122022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 150381859681 + 69839161441 = 387791^2 + 264271^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 220221021122.

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, 571847 + ... + 876042.

Almost surely, 2^220221021122 is an apocalyptic number.

220221021122 is a deficient number, since it is larger than the sum of its proper divisors (113529206998).

220221021122 is a wasteful number, since it uses less digits than its factorization.

220221021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448677.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 220221021122 its reverse (221120122022), we get a palindrome (441341143144).

The spelling of 220221021122 in words is "two hundred twenty billion, two hundred twenty-one million, twenty-one thousand, one hundred twenty-two".