12101220203212 has 48 divisors (see below), whose sum is σ = 24722468725248. Its totient is φ = 5075868954240.

The previous prime is 12101220203183. The next prime is 12101220203213. The reversal of 12101220203212 is 21230202210121.

It is a self number, because there is not a number n which added to its sum of digits gives 12101220203212.

It is not an unprimeable number, because it can be changed into a prime (12101220203213) 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, 21943458 + ... + 22488169.

It is an arithmetic number, because the mean of its divisors is an integer number (515051431776).

Almost surely, 2^{12101220203212} is an apocalyptic number.

It is an amenable number.

12101220203212 is an abundant number, since it is smaller than the sum of its proper divisors (12621248522036).

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

12101220203212 is a wasteful number, since it uses less digits than its factorization.

12101220203212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44431846 (or 44431844 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 12101220203212 its reverse (21230202210121), we get a palindrome (33331422413333).

The spelling of 12101220203212 in words is "twelve trillion, one hundred one billion, two hundred twenty million, two hundred three thousand, two hundred twelve".