2222120120221 has 2 divisors, whose sum is σ = 2222120120222. Its totient is φ = 2222120120220.

The previous prime is 2222120120201. The next prime is 2222120120249. The reversal of 2222120120221 is 1220210212222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2190432560121 + 31687560100 = 1480011^2 + 178010^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222120120221 - 2⁷ = 2222120120093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2222120120201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111060060110 + 1111060060111.

It is an arithmetic number, because the mean of its divisors is an integer number (1111060060111).

Almost surely, 2^{2222120120221} is an apocalyptic number.

It is an amenable number.

2222120120221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222120120221 is an equidigital number, since it uses as much as digits as its factorization.

2222120120221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2222120120221 its reverse (1220210212222), we get a palindrome (3442330332443).

The spelling of 2222120120221 in words is "two trillion, two hundred twenty-two billion, one hundred twenty million, one hundred twenty thousand, two hundred twenty-one".