12101111111112 has 32 divisors (see below), whose sum is σ = 30342548652000. Its totient is φ = 4021734253824.

The previous prime is 12101111111101. The next prime is 12101111111147. The reversal of 12101111111112 is 21111111110121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12101111111091 and 12101111111100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748082362 + ... + 748098537.

It is an arithmetic number, because the mean of its divisors is an integer number (948204645375).

Almost surely, 2^{12101111111112} is an apocalyptic number.

12101111111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12101111111112 is an abundant number, since it is smaller than the sum of its proper divisors (18241437540888).

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

12101111111112 is a wasteful number, since it uses less digits than its factorization.

12101111111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496181245 (or 1496181241 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 15.

Adding to 12101111111112 its reverse (21111111110121), we get a palindrome (33212222221233).

Subtracting 12101111111112 from its reverse (21111111110121), we obtain a palindrome (9009999999009).

The spelling of 12101111111112 in words is "twelve trillion, one hundred one billion, one hundred eleven million, one hundred eleven thousand, one hundred twelve".