1111121811113 has 2 divisors, whose sum is σ = 1111121811114. Its totient is φ = 1111121811112.

The previous prime is 1111121811101. The next prime is 1111121811161. The reversal of 1111121811113 is 3111181211111.

It is a m-pointer prime, because the next prime (1111121811161) can be obtained adding 1111121811113 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., 909101227024 + 202020584089 = 953468^2 + 449467^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111121811113 - 2²⁶ = 1111054702249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111121811193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555560905556 + 555560905557.

It is an arithmetic number, because the mean of its divisors is an integer number (555560905557).

Almost surely, 2^{1111121811113} is an apocalyptic number.

It is an amenable number.

1111121811113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111121811113 is an equidigital number, since it uses as much as digits as its factorization.

1111121811113 is an evil number, because the sum of its binary digits is even.

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

The spelling of 1111121811113 in words is "one trillion, one hundred eleven billion, one hundred twenty-one million, eight hundred eleven thousand, one hundred thirteen".