2223110365561 has 2 divisors, whose sum is σ = 2223110365562. Its totient is φ = 2223110365560.

The previous prime is 2223110365549. The next prime is 2223110365577. The reversal of 2223110365561 is 1655630113222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2223081000000 + 29365561 = 1491000^2 + 5419^2 .

It is a cyclic number.

It is not a de Polignac number, because 2223110365561 - 2²⁹ = 2222573494649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2223110365561.

It is not a weakly prime, because it can be changed into another prime (2223110365061) 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, 1111555182780 + 1111555182781.

It is an arithmetic number, because the mean of its divisors is an integer number (1111555182781).

Almost surely, 2^{2223110365561} is an apocalyptic number.

It is an amenable number.

2223110365561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2223110365561 is an equidigital number, since it uses as much as digits as its factorization.

2223110365561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 37.

Adding to 2223110365561 its reverse (1655630113222), we get a palindrome (3878740478783).

The spelling of 2223110365561 in words is "two trillion, two hundred twenty-three billion, one hundred ten million, three hundred sixty-five thousand, five hundred sixty-one".