220010222221 has 16 divisors (see below), whose sum is σ = 227444919408. Its totient is φ = 212675276800.

The previous prime is 220010222213. The next prime is 220010222261. The reversal of 220010222221 is 122222010022.

It can be written as a sum of positive squares in 8 ways, for example, as 353966596 + 219656255625 = 18814^2 + 468675^2 .

It is a cyclic number.

It is not a de Polignac number, because 220010222221 - 2³ = 220010222213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220010222195 and 220010222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220010222261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19531731 + ... + 19542991.

It is an arithmetic number, because the mean of its divisors is an integer number (14215307463).

Almost surely, 2^220010222221 is an apocalyptic number.

It is an amenable number.

220010222221 is a deficient number, since it is larger than the sum of its proper divisors (7434697187).

220010222221 is a wasteful number, since it uses less digits than its factorization.

220010222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15632.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 220010222221 its reverse (122222010022), we get a palindrome (342232232243).

The spelling of 220010222221 in words is "two hundred twenty billion, ten million, two hundred twenty-two thousand, two hundred twenty-one".