2222216677 has 2 divisors, whose sum is σ = 2222216678. Its totient is φ = 2222216676.

The previous prime is 2222216639. The next prime is 2222216723. The reversal of 2222216677 is 7766122222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1386370756 + 835845921 = 37234^2 + 28911^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222216677 - 2¹¹ = 2222214629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2222216627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111108338 + 1111108339.

It is an arithmetic number, because the mean of its divisors is an integer number (1111108339).

Almost surely, 2^2222216677 is an apocalyptic number.

It is an amenable number.

2222216677 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222216677 is an equidigital number, since it uses as much as digits as its factorization.

2222216677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 37.

The square root of 2222216677 is about 47140.3932631029. The cubic root of 2222216677 is about 1304.9547949482.

Adding to 2222216677 its reverse (7766122222), we get a palindrome (9988338899).

The spelling of 2222216677 in words is "two billion, two hundred twenty-two million, two hundred sixteen thousand, six hundred seventy-seven".