12111011211012 has 48 divisors (see below), whose sum is σ = 32983179479040. Its totient is φ = 3386665747872.

The previous prime is 12111011211011. The next prime is 12111011211041. The reversal of 12111011211012 is 21011211011121.

It is a junction number, because it is equal to n+sod(n) for n = 12111011210982 and 12111011211000.

It is not an unprimeable number, because it can be changed into a prime (12111011211011) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1533812062 + ... + 1533819957.

It is an arithmetic number, because the mean of its divisors is an integer number (687149572480).

Almost surely, 2^{12111011211012} is an apocalyptic number.

12111011211012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12111011211012 is an abundant number, since it is smaller than the sum of its proper divisors (20872168268028).

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

12111011211012 is a wasteful number, since it uses less digits than its factorization.

12111011211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3067632080 (or 3067632078 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 12111011211012 its reverse (21011211011121), we get a palindrome (33122222222133).

The spelling of 12111011211012 in words is "twelve trillion, one hundred eleven billion, eleven million, two hundred eleven thousand, twelve".