211321330220009 has 2 divisors, whose sum is σ = 211321330220010. Its totient is φ = 211321330220008.

The previous prime is 211321330219999. The next prime is 211321330220017. The reversal of 211321330220009 is 900022033123112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183754210026409 + 27567120193600 = 13555597^2 + 5250440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211321330220009 is a prime.

It is not a weakly prime, because it can be changed into another prime (211321330120009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105660665110004 + 105660665110005.

It is an arithmetic number, because the mean of its divisors is an integer number (105660665110005).

Almost surely, 2^{211321330220009} is an apocalyptic number.

It is an amenable number.

211321330220009 is a deficient number, since it is larger than the sum of its proper divisors (1).

211321330220009 is an equidigital number, since it uses as much as digits as its factorization.

211321330220009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 211321330220009 in words is "two hundred eleven trillion, three hundred twenty-one billion, three hundred thirty million, two hundred twenty thousand, nine".