7215224504009 has 2 divisors, whose sum is σ = 7215224504010. Its totient is φ = 7215224504008.

The previous prime is 7215224503997. The next prime is 7215224504011. The reversal of 7215224504009 is 9004054225127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3634349521609 + 3580874982400 = 1906397^2 + 1892320^2 .

It is a cyclic number.

It is not a de Polignac number, because 7215224504009 - 2¹² = 7215224499913 is a prime.

Together with 7215224504011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7215224503009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3607612252004 + 3607612252005.

It is an arithmetic number, because the mean of its divisors is an integer number (3607612252005).

Almost surely, 2^{7215224504009} is an apocalyptic number.

It is an amenable number.

7215224504009 is a deficient number, since it is larger than the sum of its proper divisors (1).

7215224504009 is an equidigital number, since it uses as much as digits as its factorization.

7215224504009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 7215224504009 in words is "seven trillion, two hundred fifteen billion, two hundred twenty-four million, five hundred four thousand, nine".