2012223209 has 2 divisors, whose sum is σ = 2012223210. Its totient is φ = 2012223208.

The previous prime is 2012223137. The next prime is 2012223271. The reversal of 2012223209 is 9023222102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2011074025 + 1149184 = 44845^2 + 1072^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012223209 - 2¹⁶ = 2012157673 is a prime.

It is not a weakly prime, because it can be changed into another prime (2012223289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006111604 + 1006111605.

It is an arithmetic number, because the mean of its divisors is an integer number (1006111605).

Almost surely, 2^2012223209 is an apocalyptic number.

It is an amenable number.

2012223209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012223209 is an equidigital number, since it uses as much as digits as its factorization.

2012223209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2012223209 is about 44857.8110143596. The cubic root of 2012223209 is about 1262.4825517178.

The spelling of 2012223209 in words is "two billion, twelve million, two hundred twenty-three thousand, two hundred nine".