12111120001212 has 48 divisors (see below), whose sum is σ = 29242216836000. Its totient is φ = 3896701204480.

The previous prime is 12111120001171. The next prime is 12111120001229. The reversal of 12111120001212 is 21210002111121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12111120001191 and 12111120001200.

It is a congruent number.

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, 3844989 + ... + 6245492.

It is an arithmetic number, because the mean of its divisors is an integer number (609212850750).

Almost surely, 2^{12111120001212} is an apocalyptic number.

12111120001212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12111120001212 is an abundant number, since it is smaller than the sum of its proper divisors (17131096834788).

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

12111120001212 is a wasteful number, since it uses less digits than its factorization.

12111120001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10093966 (or 10093964 counting only the distinct ones).

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

Adding to 12111120001212 its reverse (21210002111121), we get a palindrome (33321122112333).

The spelling of 12111120001212 in words is "twelve trillion, one hundred eleven billion, one hundred twenty million, one thousand, two hundred twelve".