2220331709 has 2 divisors, whose sum is σ = 2220331710. Its totient is φ = 2220331708.

The previous prime is 2220331691. The next prime is 2220331723. The reversal of 2220331709 is 9071330222.

2220331709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2183692900 + 36638809 = 46730^2 + 6053^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220331709 - 2⁸ = 2220331453 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2220331769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110165854 + 1110165855.

It is an arithmetic number, because the mean of its divisors is an integer number (1110165855).

Almost surely, 2^2220331709 is an apocalyptic number.

It is an amenable number.

2220331709 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220331709 is an equidigital number, since it uses as much as digits as its factorization.

2220331709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 2220331709 is about 47120.3958918004. The cubic root of 2220331709 is about 1304.5857199488.

The spelling of 2220331709 in words is "two billion, two hundred twenty million, three hundred thirty-one thousand, seven hundred nine".