2021200211212 has 72 divisors (see below), whose sum is σ = 4425893672928. Its totient is φ = 786487034880.

The previous prime is 2021200211197. The next prime is 2021200211213. The reversal of 2021200211212 is 2121120021202.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2021200211213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 608308 + ... + 2100580.

Almost surely, 2^{2021200211212} 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 2021200211212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2212946836464).

2021200211212 is an abundant number, since it is smaller than the sum of its proper divisors (2404693461716).

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

2021200211212 is a wasteful number, since it uses less digits than its factorization.

2021200211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492419 (or 1492356 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2021200211212 its reverse (2121120021202), we get a palindrome (4142320232414).

The spelling of 2021200211212 in words is "two trillion, twenty-one billion, two hundred million, two hundred eleven thousand, two hundred twelve".