20212102212020 has 12 divisors (see below), whose sum is σ = 42445414645284. Its totient is φ = 8084840884800.

The previous prime is 20212102212017. The next prime is 20212102212047. The reversal of 20212102212020 is 2021220121202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4556184168484 + 15655918043536 = 2134522^2 + 3956756^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20212102212020.

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 3 ways as a sum of consecutive naturals, for example, 505302555281 + ... + 505302555320.

It is an arithmetic number, because the mean of its divisors is an integer number (3537117887107).

Almost surely, 2^{20212102212020} is an apocalyptic number.

20212102212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20212102212020 is an abundant number, since it is smaller than the sum of its proper divisors (22233312433264).

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

20212102212020 is a wasteful number, since it uses less digits than its factorization.

20212102212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010605110610 (or 1010605110608 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20212102212020 its reverse (2021220121202), we get a palindrome (22233322333222).

The spelling of 20212102212020 in words is "twenty trillion, two hundred twelve billion, one hundred two million, two hundred twelve thousand, twenty".