2210210221 has 8 divisors (see below), whose sum is σ = 2218592000. Its totient is φ = 2201845248.

The previous prime is 2210210213. The next prime is 2210210251. The reversal of 2210210221 is 1220120122.

It is a happy number.

2210210221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2210210221 - 2³ = 2210210213 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 (2210210201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299245 + ... + 306541.

It is an arithmetic number, because the mean of its divisors is an integer number (277324000).

Almost surely, 2^2210210221 is an apocalyptic number.

It is an amenable number.

2210210221 is a deficient number, since it is larger than the sum of its proper divisors (8381779).

2210210221 is an equidigital number, since it uses as much as digits as its factorization.

2210210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8403.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2210210221 is about 47012.8729285927. The cubic root of 2210210221 is about 1302.6003613585.

Adding to 2210210221 its reverse (1220120122), we get a palindrome (3430330343).

Subtracting from 2210210221 its reverse (1220120122), we obtain a palindrome (990090099).

It can be divided in two parts, 22102 and 10221, that added together give a palindrome (32323).

The spelling of 2210210221 in words is "two billion, two hundred ten million, two hundred ten thousand, two hundred twenty-one".