1111601111 has 2 divisors, whose sum is σ = 1111601112. Its totient is φ = 1111601110.

The previous prime is 1111601093. The next prime is 1111601129. The reversal of 1111601111 is 1111061111.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (1111601093) and next prime (1111601129).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111601111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111601311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555800555 + 555800556.

It is an arithmetic number, because the mean of its divisors is an integer number (555800556).

Almost surely, 2^1111601111 is an apocalyptic number.

1111601111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111601111 is an equidigital number, since it uses as much as digits as its factorization.

1111601111 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 14.

The square root of 1111601111 is about 33340.6825215082. The cubic root of 1111601111 is about 1035.8964006336.

Adding to 1111601111 its reverse (1111061111), we get a palindrome (2222662222).

The spelling of 1111601111 in words is "one billion, one hundred eleven million, six hundred one thousand, one hundred eleven".