202110000001020 has 288 divisors, whose sum is σ = 634917631420800. Its totient is φ = 52000329203712.

The previous prime is 202110000000941. The next prime is 202110000001031. The reversal of 202110000001020 is 20100000011202.

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 = 202110000000993 and 202110000001011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 847518961 + ... + 847757399.

It is an arithmetic number, because the mean of its divisors is an integer number (2204575109100).

Almost surely, 2^{202110000001020} is an apocalyptic number.

202110000001020 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 202110000001020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317458815710400).

202110000001020 is an abundant number, since it is smaller than the sum of its proper divisors (432807631419780).

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

202110000001020 is a wasteful number, since it uses less digits than its factorization.

202110000001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239557 (or 239552 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 202110000001020 its reverse (20100000011202), we get a palindrome (222210000012222).

The spelling of 202110000001020 in words is "two hundred two trillion, one hundred ten billion, one thousand, twenty".