5223212009 has 2 divisors, whose sum is σ = 5223212010. Its totient is φ = 5223212008.

The previous prime is 5223211993. The next prime is 5223212017. The reversal of 5223212009 is 9002123225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3972528784 + 1250683225 = 63028^2 + 35365^2 .

It is a cyclic number.

It is not a de Polignac number, because 5223212009 - 2⁴ = 5223211993 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (5223212089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2611606004 + 2611606005.

It is an arithmetic number, because the mean of its divisors is an integer number (2611606005).

Almost surely, 2^5223212009 is an apocalyptic number.

It is an amenable number.

5223212009 is a deficient number, since it is larger than the sum of its proper divisors (1).

5223212009 is an equidigital number, since it uses as much as digits as its factorization.

5223212009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 5223212009 is about 72271.7926234018. The cubic root of 5223212009 is about 1735.0522242029.

The spelling of 5223212009 in words is "five billion, two hundred twenty-three million, two hundred twelve thousand, nine".