2141223209 has 2 divisors, whose sum is σ = 2141223210. Its totient is φ = 2141223208.

The previous prime is 2141223169. The next prime is 2141223233. The reversal of 2141223209 is 9023221412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1883299609 + 257923600 = 43397^2 + 16060^2 .

It is a cyclic number.

It is not a de Polignac number, because 2141223209 - 2¹⁶ = 2141157673 is a prime.

It is not a weakly prime, because it can be changed into another prime (2141223269) 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, 1070611604 + 1070611605.

It is an arithmetic number, because the mean of its divisors is an integer number (1070611605).

Almost surely, 2^2141223209 is an apocalyptic number.

It is an amenable number.

2141223209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2141223209 is an equidigital number, since it uses as much as digits as its factorization.

2141223209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2141223209 is about 46273.3531203435. The cubic root of 2141223209 is about 1288.9042252108.

The spelling of 2141223209 in words is "two billion, one hundred forty-one million, two hundred twenty-three thousand, two hundred nine".