12011212011012 has 48 divisors (see below), whose sum is σ = 28721450714880. Its totient is φ = 3904692871968.

The previous prime is 12011212010957. The next prime is 12011212011031. The reversal of 12011212011012 is 21011021211021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12011212010982 and 12011212011000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17321218 + ... + 18001305.

It is an arithmetic number, because the mean of its divisors is an integer number (598363556560).

Almost surely, 2^{12011212011012} is an apocalyptic number.

12011212011012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12011212011012 is an abundant number, since it is smaller than the sum of its proper divisors (16710238703868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12011212011012 is a wasteful number, since it uses less digits than its factorization.

12011212011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35323232 (or 35323230 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12011212011012 its reverse (21011021211021), we get a palindrome (33022233222033).

The spelling of 12011212011012 in words is "twelve trillion, eleven billion, two hundred twelve million, eleven thousand, twelve".