11111201011 has 2 divisors, whose sum is σ = 11111201012. Its totient is φ = 11111201010.

The previous prime is 11111200999. The next prime is 11111201033. The reversal of 11111201011 is 11010211111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11111201011 - 2⁵ = 11111200979 is a prime.

It is not a weakly prime, because it can be changed into another prime (11111201081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555600505 + 5555600506.

It is an arithmetic number, because the mean of its divisors is an integer number (5555600506).

Almost surely, 2^11111201011 is an apocalyptic number.

11111201011 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111201011 is an equidigital number, since it uses as much as digits as its factorization.

11111201011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 11111201011 its reverse (11010211111), we get a palindrome (22121412122).

The spelling of 11111201011 in words is "eleven billion, one hundred eleven million, two hundred one thousand, eleven".