2100200021212 has 12 divisors (see below), whose sum is σ = 3699690104656. Its totient is φ = 1043145705600.

The previous prime is 2100200021209. The next prime is 2100200021221. The reversal of 2100200021212 is 2121200020012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2100200021192 and 2100200021201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1738575573 + ... + 1738576780.

Almost surely, 2^{2100200021212} is an apocalyptic number.

It is an amenable number.

2100200021212 is a deficient number, since it is larger than the sum of its proper divisors (1599490083444).

2100200021212 is a wasteful number, since it uses less digits than its factorization.

2100200021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3477152508 (or 3477152506 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2100200021212 its reverse (2121200020012), we get a palindrome (4221400041224).

The spelling of 2100200021212 in words is "two trillion, one hundred billion, two hundred million, twenty-one thousand, two hundred twelve".