12111122111212 has 6 divisors (see below), whose sum is σ = 21194463694628. Its totient is φ = 6055561055604.

The previous prime is 12111122111177. The next prime is 12111122111303. The reversal of 12111122111212 is 21211122111121.

12111122111212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12111122111212² (a number of 27 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 12111122111212.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1513890263898 + ... + 1513890263905.

Almost surely, 2^{12111122111212} is an apocalyptic number.

It is an amenable number.

12111122111212 is a deficient number, since it is larger than the sum of its proper divisors (9083341583416).

12111122111212 is a wasteful number, since it uses less digits than its factorization.

12111122111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3027780527807 (or 3027780527805 counting only the distinct ones).

The product of its digits is 32, while the sum is 19.

Adding to 12111122111212 its reverse (21211122111121), we get a palindrome (33322244222333).

Subtracting 12111122111212 from its reverse (21211122111121), we obtain a palindrome (9099999999909).

The spelling of 12111122111212 in words is "twelve trillion, one hundred eleven billion, one hundred twenty-two million, one hundred eleven thousand, two hundred twelve".