12111210111012 has 48 divisors (see below), whose sum is σ = 28554658130880. Its totient is φ = 3994914373632.

The previous prime is 12111210110981. The next prime is 12111210111023. The reversal of 12111210111012 is 21011101211121.

It is a junction number, because it is equal to n+sod(n) for n = 12111210110982 and 12111210111000.

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, 8022523 + ... + 9411869.

It is an arithmetic number, because the mean of its divisors is an integer number (594888711060).

Almost surely, 2^{12111210111012} is an apocalyptic number.

12111210111012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12111210111012 is an abundant number, since it is smaller than the sum of its proper divisors (16443448019868).

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

12111210111012 is a wasteful number, since it uses less digits than its factorization.

12111210111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396940 (or 1396938 counting only the distinct ones).

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

Adding to 12111210111012 its reverse (21011101211121), we get a palindrome (33122311322133).

The spelling of 12111210111012 in words is "twelve trillion, one hundred eleven billion, two hundred ten million, one hundred eleven thousand, twelve".