2121322330009 has 2 divisors, whose sum is σ = 2121322330010. Its totient is φ = 2121322330008.

The previous prime is 2121322329941. The next prime is 2121322330021. The reversal of 2121322330009 is 9000332231212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1709347056400 + 411975273609 = 1307420^2 + 641853^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121322330009 - 2³¹ = 2119174846361 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121322334009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060661165004 + 1060661165005.

It is an arithmetic number, because the mean of its divisors is an integer number (1060661165005).

Almost surely, 2^{2121322330009} is an apocalyptic number.

It is an amenable number.

2121322330009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121322330009 is an equidigital number, since it uses as much as digits as its factorization.

2121322330009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 2121322330009 in words is "two trillion, one hundred twenty-one billion, three hundred twenty-two million, three hundred thirty thousand, nine".