2101200121212 has 24 divisors (see below), whose sum is σ = 4902965701200. Its totient is φ = 700376409216.

The previous prime is 2101200121169. The next prime is 2101200121301. The reversal of 2101200121212 is 2121210021012.

It is a junction number, because it is equal to n+sod(n) for n = 2101200121191 and 2101200121200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2581537 + ... + 3296472.

It is an arithmetic number, because the mean of its divisors is an integer number (204290237550).

Almost surely, 2^{2101200121212} is an apocalyptic number.

It is an amenable number.

2101200121212 is an abundant number, since it is smaller than the sum of its proper divisors (2801765579988).

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

2101200121212 is a wasteful number, since it uses less digits than its factorization.

2101200121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5907805 (or 5907803 counting only the distinct ones).

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

Adding to 2101200121212 its reverse (2121210021012), we get a palindrome (4222410142224).

The spelling of 2101200121212 in words is "two trillion, one hundred one billion, two hundred million, one hundred twenty-one thousand, two hundred twelve".