12101020021212 has 48 divisors (see below), whose sum is σ = 28256792457600. Its totient is φ = 4030662532288.

The previous prime is 12101020021177. The next prime is 12101020021219. The reversal of 12101020021212 is 21212002010121.

It is a junction number, because it is equal to n+sod(n) for n = 12101020021191 and 12101020021200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101020021219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270700039 + ... + 270744737.

It is an arithmetic number, because the mean of its divisors is an integer number (588683176200).

Almost surely, 2^{12101020021212} is an apocalyptic number.

12101020021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12101020021212 is an abundant number, since it is smaller than the sum of its proper divisors (16155772436388).

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

12101020021212 is a wasteful number, since it uses less digits than its factorization.

12101020021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61042 (or 61040 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12101020021212 its reverse (21212002010121), we get a palindrome (33313022031333).

The spelling of 12101020021212 in words is "twelve trillion, one hundred one billion, twenty million, twenty-one thousand, two hundred twelve".