2216666225393 has 2 divisors, whose sum is σ = 2216666225394. Its totient is φ = 2216666225392.

The previous prime is 2216666225383. The next prime is 2216666225467. The reversal of 2216666225393 is 3935226666122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1479417313969 + 737248911424 = 1216313^2 + 858632^2 .

It is a cyclic number.

It is not a de Polignac number, because 2216666225393 - 2¹⁰ = 2216666224369 is a prime.

It is not a weakly prime, because it can be changed into another prime (2216666225383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108333112696 + 1108333112697.

It is an arithmetic number, because the mean of its divisors is an integer number (1108333112697).

Almost surely, 2^{2216666225393} is an apocalyptic number.

It is an amenable number.

2216666225393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216666225393 is an equidigital number, since it uses as much as digits as its factorization.

2216666225393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8398080, while the sum is 53.

The spelling of 2216666225393 in words is "two trillion, two hundred sixteen billion, six hundred sixty-six million, two hundred twenty-five thousand, three hundred ninety-three".