302222123221 has 2 divisors, whose sum is σ = 302222123222. Its totient is φ = 302222123220.

The previous prime is 302222123207. The next prime is 302222123267. The reversal of 302222123221 is 122321222203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224567940996 + 77654182225 = 473886^2 + 278665^2 .

It is a cyclic number.

It is not a de Polignac number, because 302222123221 - 2²⁵ = 302188568789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 302222123192 and 302222123201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (302222523221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151111061610 + 151111061611.

It is an arithmetic number, because the mean of its divisors is an integer number (151111061611).

Almost surely, 2^302222123221 is an apocalyptic number.

It is an amenable number.

302222123221 is a deficient number, since it is larger than the sum of its proper divisors (1).

302222123221 is an equidigital number, since it uses as much as digits as its factorization.

302222123221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 302222123221 its reverse (122321222203), we get a palindrome (424543345424).

The spelling of 302222123221 in words is "three hundred two billion, two hundred twenty-two million, one hundred twenty-three thousand, two hundred twenty-one".