220410221 has 4 divisors (see below), whose sum is σ = 226367292. Its totient is φ = 214453152.

The previous prime is 220410209. The next prime is 220410257. The reversal of 220410221 is 122014022.

220410221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99102025 + 121308196 = 9955^2 + 11014^2 .

It is a cyclic number.

It is not a de Polignac number, because 220410221 - 2¹⁰ = 220409197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220410196 and 220410205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220410721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2978480 + ... + 2978553.

It is an arithmetic number, because the mean of its divisors is an integer number (56591823).

Almost surely, 2^220410221 is an apocalyptic number.

It is an amenable number.

220410221 is a deficient number, since it is larger than the sum of its proper divisors (5957071).

220410221 is an equidigital number, since it uses as much as digits as its factorization.

220410221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5957070.

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

The square root of 220410221 is about 14846.2190809647. The cubic root of 220410221 is about 604.0560568486.

Adding to 220410221 its reverse (122014022), we get a palindrome (342424243).

The spelling of 220410221 in words is "two hundred twenty million, four hundred ten thousand, two hundred twenty-one".