11111012011012 has 24 divisors (see below), whose sum is σ = 19521791565696. Its totient is φ = 5533398259488.

The previous prime is 11111012011007. The next prime is 11111012011037. The reversal of 11111012011012 is 21011021011111.

It is a junction number, because it is equal to n+sod(n) for n = 11111012010983 and 11111012011001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4037548 + ... + 6206755.

It is an arithmetic number, because the mean of its divisors is an integer number (813407981904).

Almost surely, 2^{11111012011012} is an apocalyptic number.

It is an amenable number.

11111012011012 is a deficient number, since it is larger than the sum of its proper divisors (8410779554684).

11111012011012 is a wasteful number, since it uses less digits than its factorization.

11111012011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10245387 (or 10245385 counting only the distinct ones).

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

Adding to 11111012011012 its reverse (21011021011111), we get a palindrome (32122033022123).

Subtracting 11111012011012 from its reverse (21011021011111), we obtain a palindrome (9900009000099).

The spelling of 11111012011012 in words is "eleven trillion, one hundred eleven billion, twelve million, eleven thousand, twelve".