1111371121111 has 2 divisors, whose sum is σ = 1111371121112. Its totient is φ = 1111371121110.

The previous prime is 1111371121087. The next prime is 1111371121153. The reversal of 1111371121111 is 1111211731111.

It is a m-pointer prime, because the next prime (1111371121153) can be obtained adding 1111371121111 to its product of digits (42).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111371121111 - 2²¹ = 1111369023959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111371121711) 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, 555685560555 + 555685560556.

It is an arithmetic number, because the mean of its divisors is an integer number (555685560556).

Almost surely, 2^{1111371121111} is an apocalyptic number.

1111371121111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111371121111 is an equidigital number, since it uses as much as digits as its factorization.

1111371121111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42, while the sum is 22.

Adding to 1111371121111 its reverse (1111211731111), we get a palindrome (2222582852222).

The spelling of 1111371121111 in words is "one trillion, one hundred eleven billion, three hundred seventy-one million, one hundred twenty-one thousand, one hundred eleven".