1123222064581 has 2 divisors, whose sum is σ = 1123222064582. Its totient is φ = 1123222064580.

The previous prime is 1123222064563. The next prime is 1123222064677. The reversal of 1123222064581 is 1854602223211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1108872180900 + 14349883681 = 1053030^2 + 119791^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123222064581 - 2¹¹ = 1123222062533 is a prime.

It is a super-2 number, since 2×1123222064581² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1123222064581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123222064381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561611032290 + 561611032291.

It is an arithmetic number, because the mean of its divisors is an integer number (561611032291).

Almost surely, 2^{1123222064581} is an apocalyptic number.

It is an amenable number.

1123222064581 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123222064581 is an equidigital number, since it uses as much as digits as its factorization.

1123222064581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 37.

Adding to 1123222064581 its reverse (1854602223211), we get a palindrome (2977824287792).

The spelling of 1123222064581 in words is "one trillion, one hundred twenty-three billion, two hundred twenty-two million, sixty-four thousand, five hundred eighty-one".