1111011111611 has 2 divisors, whose sum is σ = 1111011111612. Its totient is φ = 1111011111610.

The previous prime is 1111011111607. The next prime is 1111011111629. The reversal of 1111011111611 is 1161111101111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111011111611 - 2² = 1111011111607 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1111011111611.

It is not a weakly prime, because it can be changed into another prime (1111011311611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555505555805 + 555505555806.

It is an arithmetic number, because the mean of its divisors is an integer number (555505555806).

Almost surely, 2^{1111011111611} is an apocalyptic number.

1111011111611 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111011111611 is an equidigital number, since it uses as much as digits as its factorization.

1111011111611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 17.

Adding to 1111011111611 its reverse (1161111101111), we get a palindrome (2272122212722).

The spelling of 1111011111611 in words is "one trillion, one hundred eleven billion, eleven million, one hundred eleven thousand, six hundred eleven".