302212302221 has 2 divisors, whose sum is σ = 302212302222. Its totient is φ = 302212302220.

The previous prime is 302212302211. The next prime is 302212302241. The reversal of 302212302221 is 122203212203.

It is a happy number.

It is an a-pointer prime, because the next prime (302212302241) can be obtained adding 302212302221 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 284526228100 + 17686074121 = 533410^2 + 132989^2 .

It is a cyclic number.

It is not a de Polignac number, because 302212302221 - 2¹⁰ = 302212301197 is a prime.

It is a super-2 number, since 2×302212302221² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 302212302193 and 302212302202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (302212302211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151106151110 + 151106151111.

It is an arithmetic number, because the mean of its divisors is an integer number (151106151111).

Almost surely, 2^302212302221 is an apocalyptic number.

It is an amenable number.

302212302221 is a deficient number, since it is larger than the sum of its proper divisors (1).

302212302221 is an equidigital number, since it uses as much as digits as its factorization.

302212302221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 302212302221 its reverse (122203212203), we get a palindrome (424415514424).

The spelling of 302212302221 in words is "three hundred two billion, two hundred twelve million, three hundred two thousand, two hundred twenty-one".