202010200000020 has 240 divisors, whose sum is σ = 639992708929728. Its totient is φ = 53337472081920.

The previous prime is 202010200000019. The next prime is 202010200000093. The reversal of 202010200000020 is 20000002010202.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 202010199999948 and 202010200000011.

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 79 ways as a sum of consecutive naturals, for example, 92939092 + ... + 95087828.

Almost surely, 2^{202010200000020} is an apocalyptic number.

202010200000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202010200000020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (319996354464864).

202010200000020 is an abundant number, since it is smaller than the sum of its proper divisors (437982508929708).

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

202010200000020 is a wasteful number, since it uses less digits than its factorization.

202010200000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149332 (or 2149321 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 202010200000020 its reverse (20000002010202), we get a palindrome (222010202010222).

The spelling of 202010200000020 in words is "two hundred two trillion, ten billion, two hundred million, twenty", and thus it is an aban number.