1131233012111 has 2 divisors, whose sum is σ = 1131233012112. Its totient is φ = 1131233012110.

The previous prime is 1131233012093. The next prime is 1131233012179. The reversal of 1131233012111 is 1112103321311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1131233012111 - 2⁶ = 1131233012047 is a prime.

It is a super-3 number, since 3×1131233012111³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131233012711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565616506055 + 565616506056.

It is an arithmetic number, because the mean of its divisors is an integer number (565616506056).

Almost surely, 2^{1131233012111} is an apocalyptic number.

1131233012111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131233012111 is an equidigital number, since it uses as much as digits as its factorization.

1131233012111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1131233012111 its reverse (1112103321311), we get a palindrome (2243336333422).

The spelling of 1131233012111 in words is "one trillion, one hundred thirty-one billion, two hundred thirty-three million, twelve thousand, one hundred eleven".