1121231012113 has 2 divisors, whose sum is σ = 1121231012114. Its totient is φ = 1121231012112.

The previous prime is 1121231012093. The next prime is 1121231012149. The reversal of 1121231012113 is 3112101321211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1019984863249 + 101246148864 = 1009943^2 + 318192^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121231012113 - 2⁹ = 1121231011601 is a prime.

It is not a weakly prime, because it can be changed into another prime (1121231018113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560615506056 + 560615506057.

It is an arithmetic number, because the mean of its divisors is an integer number (560615506057).

Almost surely, 2^{1121231012113} is an apocalyptic number.

It is an amenable number.

1121231012113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121231012113 is an equidigital number, since it uses as much as digits as its factorization.

1121231012113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1121231012113 its reverse (3112101321211), we get a palindrome (4233332333324).

The spelling of 1121231012113 in words is "one trillion, one hundred twenty-one billion, two hundred thirty-one million, twelve thousand, one hundred thirteen".