2120200021212 has 576 divisors, whose sum is σ = 6518264610816. Its totient is φ = 531116974080.

The previous prime is 2120200021189. The next prime is 2120200021243. The reversal of 2120200021212 is 2121200020212.

It is a junction number, because it is equal to n+sod(n) for n = 2120200021191 and 2120200021200.

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 191 ways as a sum of consecutive naturals, for example, 2406583012 + ... + 2406583892.

It is an arithmetic number, because the mean of its divisors is an integer number (11316431616).

Almost surely, 2^{2120200021212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2120200021212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3259132305408).

2120200021212 is an abundant number, since it is smaller than the sum of its proper divisors (4398064589604).

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

2120200021212 is a wasteful number, since it uses less digits than its factorization.

2120200021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146 (or 1137 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2120200021212 its reverse (2121200020212), we get a palindrome (4241400041424).

The spelling of 2120200021212 in words is "two trillion, one hundred twenty billion, two hundred million, twenty-one thousand, two hundred twelve".