11000012111 has 12 divisors (see below), whose sum is σ = 12210648072. Its totient is φ = 9900990000.

The previous prime is 11000012063. The next prime is 11000012119. The reversal of 11000012111 is 11121000011.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-11000012111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000012119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 437825 + ... + 462266.

It is an arithmetic number, because the mean of its divisors is an integer number (1017554006).

Almost surely, 2^11000012111 is an apocalyptic number.

11000012111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11000012111 is a deficient number, since it is larger than the sum of its proper divisors (1210635961).

11000012111 is a wasteful number, since it uses less digits than its factorization.

11000012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900214 (or 900203 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 11000012111 its reverse (11121000011), we get a palindrome (22121012122).

The spelling of 11000012111 in words is "eleven billion, twelve thousand, one hundred eleven".