3012210221 has 2 divisors, whose sum is σ = 3012210222. Its totient is φ = 3012210220.

The previous prime is 3012210217. The next prime is 3012210241. The reversal of 3012210221 is 1220122103.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2919781225 + 92428996 = 54035^2 + 9614^2 .

It is a cyclic number.

It is not a de Polignac number, because 3012210221 - 2² = 3012210217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3012210196 and 3012210205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3012210211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1506105110 + 1506105111.

It is an arithmetic number, because the mean of its divisors is an integer number (1506105111).

Almost surely, 2^3012210221 is an apocalyptic number.

It is an amenable number.

3012210221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3012210221 is an equidigital number, since it uses as much as digits as its factorization.

3012210221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 3012210221 is about 54883.6061224115. The cubic root of 3012210221 is about 1444.2036090054.

Adding to 3012210221 its reverse (1220122103), we get a palindrome (4232332324).

The spelling of 3012210221 in words is "three billion, twelve million, two hundred ten thousand, two hundred twenty-one".