2211201220009 has 2 divisors, whose sum is σ = 2211201220010. Its totient is φ = 2211201220008.

The previous prime is 2211201219979. The next prime is 2211201220027. The reversal of 2211201220009 is 9000221021122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2151736934400 + 59464285609 = 1466880^2 + 243853^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211201220009 - 2⁹ = 2211201219497 is a prime.

It is not a weakly prime, because it can be changed into another prime (2211201220049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105600610004 + 1105600610005.

It is an arithmetic number, because the mean of its divisors is an integer number (1105600610005).

Almost surely, 2^{2211201220009} is an apocalyptic number.

It is an amenable number.

2211201220009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211201220009 is an equidigital number, since it uses as much as digits as its factorization.

2211201220009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 2211201220009 in words is "two trillion, two hundred eleven billion, two hundred one million, two hundred twenty thousand, nine".