611110101011 has 2 divisors, whose sum is σ = 611110101012. Its totient is φ = 611110101010.

The previous prime is 611110100971. The next prime is 611110101067. The reversal of 611110101011 is 110101011116.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611110101011 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (611110101211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305555050505 + 305555050506.

It is an arithmetic number, because the mean of its divisors is an integer number (305555050506).

Almost surely, 2^611110101011 is an apocalyptic number.

611110101011 is a deficient number, since it is larger than the sum of its proper divisors (1).

611110101011 is an equidigital number, since it uses as much as digits as its factorization.

611110101011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 14.

Adding to 611110101011 its reverse (110101011116), we get a palindrome (721211112127).

The spelling of 611110101011 in words is "six hundred eleven billion, one hundred ten million, one hundred one thousand, eleven".