11111111011012 has 96 divisors (see below), whose sum is σ = 19876318542080. Its totient is φ = 5434013122560.

The previous prime is 11111111010997. The next prime is 11111111011037. The reversal of 11111111011012 is 21011011111111.

It is a junction number, because it is equal to n+sod(n) for n = 11111111010983 and 11111111011001.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14448778564 + ... + 14448779332.

Almost surely, 2^{11111111011012} is an apocalyptic number.

It is an amenable number.

11111111011012 is a deficient number, since it is larger than the sum of its proper divisors (8765207531068).

11111111011012 is a wasteful number, since it uses less digits than its factorization.

11111111011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2061 (or 2059 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 13.

Adding to 11111111011012 its reverse (21011011111111), we get a palindrome (32122122122123).

The spelling of 11111111011012 in words is "eleven trillion, one hundred eleven billion, one hundred eleven million, eleven thousand, twelve".