210202102020020 has 48 divisors (see below), whose sum is σ = 481648201933248. Its totient is φ = 76422160469760.

The previous prime is 210202102019989. The next prime is 210202102020077. The reversal of 210202102020020 is 20020201202012.

It is a junction number, because it is equal to n+sod(n) for n = 210202102019977 and 210202102020004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92421017 + ... + 94668096.

It is an arithmetic number, because the mean of its divisors is an integer number (10034337540276).

Almost surely, 2^{210202102020020} is an apocalyptic number.

210202102020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210202102020020 is an abundant number, since it is smaller than the sum of its proper divisors (271446099913228).

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

210202102020020 is a wasteful number, since it uses less digits than its factorization.

210202102020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187094240 (or 187094238 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 210202102020020 its reverse (20020201202012), we get a palindrome (230222303222032).

The spelling of 210202102020020 in words is "two hundred ten trillion, two hundred two billion, one hundred two million, twenty thousand, twenty".