2217328222664 has 8 divisors (see below), whose sum is σ = 4157490417510. Its totient is φ = 1108664111328.

The previous prime is 2217328222663. The next prime is 2217328222667. The reversal of 2217328222664 is 4662228237122.

It can be written as a sum of positive squares in only one way, i.e., 1578143962564 + 639184260100 = 1256242^2 + 799490^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2217328222661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138583013909 + ... + 138583013924.

Almost surely, 2^{2217328222664} is an apocalyptic number.

It is an amenable number.

2217328222664 is a deficient number, since it is larger than the sum of its proper divisors (1940162194846).

2217328222664 is a wasteful number, since it uses less digits than its factorization.

2217328222664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277166027839 (or 277166027835 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 47.

The spelling of 2217328222664 in words is "two trillion, two hundred seventeen billion, three hundred twenty-eight million, two hundred twenty-two thousand, six hundred sixty-four".