2221716697 has 2 divisors, whose sum is σ = 2221716698. Its totient is φ = 2221716696.

The previous prime is 2221716667. The next prime is 2221716703. The reversal of 2221716697 is 7966171222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2207496256 + 14220441 = 46984^2 + 3771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221716697 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221716667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110858348 + 1110858349.

It is an arithmetic number, because the mean of its divisors is an integer number (1110858349).

Almost surely, 2^2221716697 is an apocalyptic number.

It is an amenable number.

2221716697 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221716697 is an equidigital number, since it uses as much as digits as its factorization.

2221716697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The square root of 2221716697 is about 47135.0898694380. The cubic root of 2221716697 is about 1304.8569196685.

The spelling of 2221716697 in words is "two billion, two hundred twenty-one million, seven hundred sixteen thousand, six hundred ninety-seven".