1223444567773 has 2 divisors, whose sum is σ = 1223444567774. Its totient is φ = 1223444567772.

The previous prime is 1223444567759. The next prime is 1223444567791. The reversal of 1223444567773 is 3777654443221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1222941821689 + 502746084 = 1105867^2 + 22422^2 .

It is an emirp because it is prime and its reverse (3777654443221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1223444567773 - 2¹³ = 1223444559581 is a prime.

It is a super-2 number, since 2×1223444567773² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223444567743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611722283886 + 611722283887.

It is an arithmetic number, because the mean of its divisors is an integer number (611722283887).

Almost surely, 2^{1223444567773} is an apocalyptic number.

It is an amenable number.

1223444567773 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223444567773 is an equidigital number, since it uses as much as digits as its factorization.

1223444567773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23708160, while the sum is 55.

The spelling of 1223444567773 in words is "one trillion, two hundred twenty-three billion, four hundred forty-four million, five hundred sixty-seven thousand, seven hundred seventy-three".