2211220289 has 2 divisors, whose sum is σ = 2211220290. Its totient is φ = 2211220288.

The previous prime is 2211220283. The next prime is 2211220303. The reversal of 2211220289 is 9820221122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2210880400 + 339889 = 47020^2 + 583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2211220289 is a prime.

It is not a weakly prime, because it can be changed into another prime (2211220283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105610144 + 1105610145.

It is an arithmetic number, because the mean of its divisors is an integer number (1105610145).

Almost surely, 2^2211220289 is an apocalyptic number.

It is an amenable number.

2211220289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211220289 is an equidigital number, since it uses as much as digits as its factorization.

2211220289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 2211220289 is about 47023.6141635243. The cubic root of 2211220289 is about 1302.7987609727.

The spelling of 2211220289 in words is "two billion, two hundred eleven million, two hundred twenty thousand, two hundred eighty-nine".