2150221009 has 2 divisors, whose sum is σ = 2150221010. Its totient is φ = 2150221008.

The previous prime is 2150220983. The next prime is 2150221027. The reversal of 2150221009 is 9001220512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1300323600 + 849897409 = 36060^2 + 29153^2 .

It is a cyclic number.

It is not a de Polignac number, because 2150221009 - 2⁷ = 2150220881 is a prime.

It is not a weakly prime, because it can be changed into another prime (2150225009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075110504 + 1075110505.

It is an arithmetic number, because the mean of its divisors is an integer number (1075110505).

Almost surely, 2^2150221009 is an apocalyptic number.

It is an amenable number.

2150221009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2150221009 is an equidigital number, since it uses as much as digits as its factorization.

2150221009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 2150221009 is about 46370.4756175737. The cubic root of 2150221009 is about 1290.7071036723.

The spelling of 2150221009 in words is "two billion, one hundred fifty million, two hundred twenty-one thousand, nine".