1123211102681 has 2 divisors, whose sum is σ = 1123211102682. Its totient is φ = 1123211102680.

The previous prime is 1123211102669. The next prime is 1123211102701. The reversal of 1123211102681 is 1862011123211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 681517942681 + 441693160000 = 825541^2 + 664600^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123211102681 - 2¹⁸ = 1123210840537 is a prime.

It is a super-2 number, since 2×1123211102681² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1123211102641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561605551340 + 561605551341.

It is an arithmetic number, because the mean of its divisors is an integer number (561605551341).

Almost surely, 2^{1123211102681} is an apocalyptic number.

It is an amenable number.

1123211102681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123211102681 is an equidigital number, since it uses as much as digits as its factorization.

1123211102681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 29.

Adding to 1123211102681 its reverse (1862011123211), we get a palindrome (2985222225892).

The spelling of 1123211102681 in words is "one trillion, one hundred twenty-three billion, two hundred eleven million, one hundred two thousand, six hundred eighty-one".