210020201020 has 48 divisors (see below), whose sum is σ = 504536776128. Its totient is φ = 71937169920.

The previous prime is 210020201009. The next prime is 210020201077. The reversal of 210020201020 is 20102020012.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 210020200988 and 210020201006.

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, 581491 + ... + 870730.

It is an arithmetic number, because the mean of its divisors is an integer number (10511182836).

Almost surely, 2^210020201020 is an apocalyptic number.

210020201020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210020201020 is an abundant number, since it is smaller than the sum of its proper divisors (294516575108).

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

210020201020 is a wasteful number, since it uses less digits than its factorization.

210020201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453270 (or 1453268 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 210020201020 its reverse (20102020012), we get a palindrome (230122221032).

The spelling of 210020201020 in words is "two hundred ten billion, twenty million, two hundred one thousand, twenty".