211111110011 has 2 divisors, whose sum is σ = 211111110012. Its totient is φ = 211111110010.

The previous prime is 211111109977. The next prime is 211111110019. The reversal of 211111110011 is 110011111112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211111110011 - 2²² = 211106915707 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211111109974 and 211111110001.

It is not a weakly prime, because it can be changed into another prime (211111110019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555555005 + 105555555006.

It is an arithmetic number, because the mean of its divisors is an integer number (105555555006).

Almost surely, 2^211111110011 is an apocalyptic number.

211111110011 is a deficient number, since it is larger than the sum of its proper divisors (1).

211111110011 is an equidigital number, since it uses as much as digits as its factorization.

211111110011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 211111110011 its reverse (110011111112), we get a palindrome (321122221123).

The spelling of 211111110011 in words is "two hundred eleven billion, one hundred eleven million, one hundred ten thousand, eleven".