12101110201212 has 96 divisors (see below), whose sum is σ = 29992415019840. Its totient is φ = 3784298004480.

The previous prime is 12101110201181. The next prime is 12101110201223. The reversal of 12101110201212 is 21210201110121.

It is a happy number.

It is a super-2 number, since 2×12101110201212² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12101110201191 and 12101110201200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 344341162 + ... + 344376302.

It is an arithmetic number, because the mean of its divisors is an integer number (312420989790).

Almost surely, 2^{12101110201212} is an apocalyptic number.

12101110201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12101110201212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14996207509920).

12101110201212 is an abundant number, since it is smaller than the sum of its proper divisors (17891304818628).

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

12101110201212 is a wasteful number, since it uses less digits than its factorization.

12101110201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40511 (or 40509 counting only the distinct ones).

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

Adding to 12101110201212 its reverse (21210201110121), we get a palindrome (33311311311333).

The spelling of 12101110201212 in words is "twelve trillion, one hundred one billion, one hundred ten million, two hundred one thousand, two hundred twelve".