11101111012 has 12 divisors (see below), whose sum is σ = 19566707440. Its totient is φ = 5510623176.

The previous prime is 11101111003. The next prime is 11101111013. The reversal of 11101111012 is 21011110111.

It is a self number, because there is not a number n which added to its sum of digits gives 11101111012.

It is not an unprimeable number, because it can be changed into a prime (11101111013) 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, 9982458 + ... + 9983569.

Almost surely, 2^11101111012 is an apocalyptic number.

It is an amenable number.

11101111012 is a deficient number, since it is larger than the sum of its proper divisors (8465596428).

11101111012 is a wasteful number, since it uses less digits than its factorization.

11101111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19966170 (or 19966168 counting only the distinct ones).

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

Adding to 11101111012 its reverse (21011110111), we get a palindrome (32112221123).

Subtracting 11101111012 from its reverse (21011110111), we obtain a palindrome (9909999099).

The spelling of 11101111012 in words is "eleven billion, one hundred one million, one hundred eleven thousand, twelve".