1118121111113 has 2 divisors, whose sum is σ = 1118121111114. Its totient is φ = 1118121111112.

The previous prime is 1118121111097. The next prime is 1118121111161. The reversal of 1118121111113 is 3111111218111.

It is a m-pointer prime, because the next prime (1118121111161) can be obtained adding 1118121111113 to its product of digits (48).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 947046224569 + 171074886544 = 973163^2 + 413612^2 .

It is a cyclic number.

It is not a de Polignac number, because 1118121111113 - 2⁴ = 1118121111097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1118121111713) 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, 559060555556 + 559060555557.

It is an arithmetic number, because the mean of its divisors is an integer number (559060555557).

Almost surely, 2^{1118121111113} is an apocalyptic number.

It is an amenable number.

1118121111113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118121111113 is an equidigital number, since it uses as much as digits as its factorization.

1118121111113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48, while the sum is 23.

Adding to 1118121111113 its reverse (3111111218111), we get a palindrome (4229232329224).

The spelling of 1118121111113 in words is "one trillion, one hundred eighteen billion, one hundred twenty-one million, one hundred eleven thousand, one hundred thirteen".