2220220110221 has 2 divisors, whose sum is σ = 2220220110222. Its totient is φ = 2220220110220.

The previous prime is 2220220110211. The next prime is 2220220110223. The reversal of 2220220110221 is 1220110220222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2033150884996 + 187069225225 = 1425886^2 + 432515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2220220110221 is a prime.

Together with 2220220110223, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2220220110221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2220220110223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110110055110 + 1110110055111.

It is an arithmetic number, because the mean of its divisors is an integer number (1110110055111).

Almost surely, 2^{2220220110221} is an apocalyptic number.

It is an amenable number.

2220220110221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220220110221 is an equidigital number, since it uses as much as digits as its factorization.

2220220110221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2220220110221 its reverse (1220110220222), we get a palindrome (3440330330443).

The spelling of 2220220110221 in words is "two trillion, two hundred twenty billion, two hundred twenty million, one hundred ten thousand, two hundred twenty-one".