11111211002011 has 4 divisors (see below), whose sum is σ = 11158898603112. Its totient is φ = 11063523400912.

The previous prime is 11111211001903. The next prime is 11111211002051. The reversal of 11111211002011 is 11020011211111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11111211002011 - 2²⁹ = 11110674131099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11111211001982 and 11111211002000.

It is not an unprimeable number, because it can be changed into a prime (11111211002051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23843800201 + ... + 23843800666.

It is an arithmetic number, because the mean of its divisors is an integer number (2789724650778).

Almost surely, 2^{11111211002011} is an apocalyptic number.

11111211002011 is a deficient number, since it is larger than the sum of its proper divisors (47687601101).

11111211002011 is an equidigital number, since it uses as much as digits as its factorization.

11111211002011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47687601100.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11111211002011 its reverse (11020011211111), we get a palindrome (22131222213122).

The spelling of 11111211002011 in words is "eleven trillion, one hundred eleven billion, two hundred eleven million, two thousand, eleven".