2012003221 has 2 divisors, whose sum is σ = 2012003222. Its totient is φ = 2012003220.

The previous prime is 2012003207. The next prime is 2012003243. The reversal of 2012003221 is 1223002102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1551256996 + 460746225 = 39386^2 + 21465^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012003221 - 2⁹ = 2012002709 is a prime.

It is a super-2 number, since 2×2012003221² = 8096313922628749682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012003621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006001610 + 1006001611.

It is an arithmetic number, because the mean of its divisors is an integer number (1006001611).

Almost surely, 2^2012003221 is an apocalyptic number.

It is an amenable number.

2012003221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012003221 is an equidigital number, since it uses as much as digits as its factorization.

2012003221 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 13.

The square root of 2012003221 is about 44855.3588883201. The cubic root of 2012003221 is about 1262.4365427178.

Adding to 2012003221 its reverse (1223002102), we get a palindrome (3235005323).

The spelling of 2012003221 in words is "two billion, twelve million, three thousand, two hundred twenty-one".