2210110100221 has 4 divisors (see below), whose sum is σ = 2210974439932. Its totient is φ = 2209245760512.

The previous prime is 2210110100213. The next prime is 2210110100243. The reversal of 2210110100221 is 1220010110122.

2210110100221 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 1156635720900 + 1053474379321 = 1075470^2 + 1026389^2 .

It is a cyclic number.

It is not a de Polignac number, because 2210110100221 - 2³ = 2210110100213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2210110100291) 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, 432166020 + ... + 432171133.

It is an arithmetic number, because the mean of its divisors is an integer number (552743609983).

Almost surely, 2^{2210110100221} is an apocalyptic number.

It is an amenable number.

2210110100221 is a deficient number, since it is larger than the sum of its proper divisors (864339711).

2210110100221 is an equidigital number, since it uses as much as digits as its factorization.

2210110100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864339710.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2210110100221 its reverse (1220010110122), we get a palindrome (3430120210343).

Subtracting from 2210110100221 its reverse (1220010110122), we obtain a palindrome (990099990099).

The spelling of 2210110100221 in words is "two trillion, two hundred ten billion, one hundred ten million, one hundred thousand, two hundred twenty-one".