2210112221 has 2 divisors, whose sum is σ = 2210112222. Its totient is φ = 2210112220.

The previous prime is 2210112209. The next prime is 2210112241. The reversal of 2210112221 is 1222110122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1945692100 + 264420121 = 44110^2 + 16261^2 .

It is a cyclic number.

It is not a de Polignac number, because 2210112221 - 2³⁰ = 1136370397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2210112196 and 2210112205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2210112241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105056110 + 1105056111.

It is an arithmetic number, because the mean of its divisors is an integer number (1105056111).

Almost surely, 2^2210112221 is an apocalyptic number.

It is an amenable number.

2210112221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2210112221 is an equidigital number, since it uses as much as digits as its factorization.

2210112221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2210112221 is about 47011.8306493163. The cubic root of 2210112221 is about 1302.5811087823.

Adding to 2210112221 its reverse (1222110122), we get a palindrome (3432222343).

The spelling of 2210112221 in words is "two billion, two hundred ten million, one hundred twelve thousand, two hundred twenty-one".