10321203212009 has 2 divisors, whose sum is σ = 10321203212010. Its totient is φ = 10321203212008.

The previous prime is 10321203212003. The next prime is 10321203212059. The reversal of 10321203212009 is 90021230212301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9460102729984 + 861100482025 = 3075728^2 + 927955^2 .

It is a cyclic number.

It is not a de Polignac number, because 10321203212009 - 2⁴ = 10321203211993 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 (10321203212003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5160601606004 + 5160601606005.

It is an arithmetic number, because the mean of its divisors is an integer number (5160601606005).

Almost surely, 2^{10321203212009} is an apocalyptic number.

It is an amenable number.

10321203212009 is a deficient number, since it is larger than the sum of its proper divisors (1).

10321203212009 is an equidigital number, since it uses as much as digits as its factorization.

10321203212009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 10321203212009 in words is "ten trillion, three hundred twenty-one billion, two hundred three million, two hundred twelve thousand, nine".