2211223133209 has 2 divisors, whose sum is σ = 2211223133210. Its totient is φ = 2211223133208.

The previous prime is 2211223133183. The next prime is 2211223133261. The reversal of 2211223133209 is 9023313221122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1570698225625 + 640524907584 = 1253275^2 + 800328^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211223133209 - 2¹³ = 2211223125017 is a prime.

It is not a weakly prime, because it can be changed into another prime (2211223133279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105611566604 + 1105611566605.

It is an arithmetic number, because the mean of its divisors is an integer number (1105611566605).

Almost surely, 2^{2211223133209} is an apocalyptic number.

It is an amenable number.

2211223133209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211223133209 is an equidigital number, since it uses as much as digits as its factorization.

2211223133209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

It can be divided in two parts, 2211223 and 133209, that added together give a palindrome (2344432).

The spelling of 2211223133209 in words is "two trillion, two hundred eleven billion, two hundred twenty-three million, one hundred thirty-three thousand, two hundred nine".