1111231151111 has 2 divisors, whose sum is σ = 1111231151112. Its totient is φ = 1111231151110.

The previous prime is 1111231151089. The next prime is 1111231151141. The reversal of 1111231151111 is 1111511321111.

It is a m-pointer prime, because the next prime (1111231151141) can be obtained adding 1111231151111 to its product of digits (30).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111231151111 - 2⁶ = 1111231151047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111231151141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555615575555 + 555615575556.

It is an arithmetic number, because the mean of its divisors is an integer number (555615575556).

Almost surely, 2^{1111231151111} is an apocalyptic number.

1111231151111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111231151111 is an equidigital number, since it uses as much as digits as its factorization.

1111231151111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30, while the sum is 20.

Adding to 1111231151111 its reverse (1111511321111), we get a palindrome (2222742472222).

The spelling of 1111231151111 in words is "one trillion, one hundred eleven billion, two hundred thirty-one million, one hundred fifty-one thousand, one hundred eleven".