212101021212020 has 12 divisors (see below), whose sum is σ = 445412144545284. Its totient is φ = 84840408484800.

The previous prime is 212101021212001. The next prime is 212101021212109. The reversal of 212101021212020 is 20212120101212.

212101021212020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 46850356151824 + 165250665060196 = 6844732^2 + 12854986^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212101021212020.

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, 5302525530281 + ... + 5302525530320.

It is an arithmetic number, because the mean of its divisors is an integer number (37117678712107).

Almost surely, 2^{212101021212020} is an apocalyptic number.

212101021212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212101021212020 is an abundant number, since it is smaller than the sum of its proper divisors (233311123333264).

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

212101021212020 is a wasteful number, since it uses less digits than its factorization.

212101021212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10605051060610 (or 10605051060608 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212101021212020 its reverse (20212120101212), we get a palindrome (232313141313232).

The spelling of 212101021212020 in words is "two hundred twelve trillion, one hundred one billion, twenty-one million, two hundred twelve thousand, twenty".