1123211612113 has 2 divisors, whose sum is σ = 1123211612114. Its totient is φ = 1123211612112.

The previous prime is 1123211612087. The next prime is 1123211612161. The reversal of 1123211612113 is 3112161123211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1090339021249 + 32872590864 = 1044193^2 + 181308^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123211612113 - 2³⁷ = 985772658641 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123211652113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561605806056 + 561605806057.

It is an arithmetic number, because the mean of its divisors is an integer number (561605806057).

Almost surely, 2^{1123211612113} is an apocalyptic number.

It is an amenable number.

1123211612113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123211612113 is an equidigital number, since it uses as much as digits as its factorization.

1123211612113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 25.

Adding to 1123211612113 its reverse (3112161123211), we get a palindrome (4235372735324).

The spelling of 1123211612113 in words is "one trillion, one hundred twenty-three billion, two hundred eleven million, six hundred twelve thousand, one hundred thirteen".