202102020202020 has 192 divisors, whose sum is σ = 588812281344000. Its totient is φ = 51732378664960.

The previous prime is 202102020202013. The next prime is 202102020202067. The reversal of 202102020202020 is 20202020201202.

It is a super-2 number, since 2×202102020202020² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

202102020202020 is a modest number, since divided by 20202020 gives 2021020 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 563801806 + ... + 564160154.

It is an arithmetic number, because the mean of its divisors is an integer number (3066730632000).

Almost surely, 2^{202102020202020} is an apocalyptic number.

202102020202020 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 202102020202020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294406140672000).

202102020202020 is an abundant number, since it is smaller than the sum of its proper divisors (386710261141980).

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

202102020202020 is a wasteful number, since it uses less digits than its factorization.

202102020202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360278 (or 360276 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 202102020202020 its reverse (20202020201202), we get a palindrome (222304040403222).

The spelling of 202102020202020 in words is "two hundred two trillion, one hundred two billion, twenty million, two hundred two thousand, twenty".