222123021017 has 2 divisors, whose sum is σ = 222123021018. Its totient is φ = 222123021016.

The previous prime is 222123021007. The next prime is 222123021031. The reversal of 222123021017 is 710120321222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154967408281 + 67155612736 = 393659^2 + 259144^2 .

It is a cyclic number.

It is not a de Polignac number, because 222123021017 - 2¹⁸ = 222122758873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222123020983 and 222123021001.

It is not a weakly prime, because it can be changed into another prime (222123021007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111061510508 + 111061510509.

It is an arithmetic number, because the mean of its divisors is an integer number (111061510509).

Almost surely, 2^222123021017 is an apocalyptic number.

It is an amenable number.

222123021017 is a deficient number, since it is larger than the sum of its proper divisors (1).

222123021017 is an equidigital number, since it uses as much as digits as its factorization.

222123021017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 222123021017 its reverse (710120321222), we get a palindrome (932243342239).

The spelling of 222123021017 in words is "two hundred twenty-two billion, one hundred twenty-three million, twenty-one thousand, seventeen".