220221011205 has 24 divisors (see below), whose sum is σ = 411079222008. Its totient is φ = 108416497536.

The previous prime is 220221011189. The next prime is 220221011209. The reversal of 220221011205 is 502110122022.

It can be written as a sum of positive squares in 4 ways, for example, as 4102018209 + 216118992996 = 64047^2 + 464886^2 .

It is not a de Polignac number, because 220221011205 - 2⁴ = 220221011189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221011209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188222502 + ... + 188223671.

It is an arithmetic number, because the mean of its divisors is an integer number (17128300917).

Almost surely, 2^220221011205 is an apocalyptic number.

It is an amenable number.

220221011205 is a deficient number, since it is larger than the sum of its proper divisors (190858210803).

220221011205 is a wasteful number, since it uses less digits than its factorization.

220221011205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376446197 (or 376446194 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

Adding to 220221011205 its reverse (502110122022), we get a palindrome (722331133227).

The spelling of 220221011205 in words is "two hundred twenty billion, two hundred twenty-one million, eleven thousand, two hundred five".