12111011011012 has 12 divisors (see below), whose sum is σ = 21553494172560. Its totient is φ = 5952869818856.

The previous prime is 12111011011007. The next prime is 12111011011031. The reversal of 12111011011012 is 21011011011121.

It is a junction number, because it is equal to n+sod(n) for n = 12111011010983 and 12111011011001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25658921398 + ... + 25658921869.

It is an arithmetic number, because the mean of its divisors is an integer number (1796124514380).

Almost surely, 2^{12111011011012} is an apocalyptic number.

It is an amenable number.

12111011011012 is a deficient number, since it is larger than the sum of its proper divisors (9442483161548).

12111011011012 is a wasteful number, since it uses less digits than its factorization.

12111011011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51317843330 (or 51317843328 counting only the distinct ones).

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

Adding to 12111011011012 its reverse (21011011011121), we get a palindrome (33122022022133).

The spelling of 12111011011012 in words is "twelve trillion, one hundred eleven billion, eleven million, eleven thousand, twelve".