202102021202020 has 48 divisors (see below), whose sum is σ = 424475237446848. Its totient is φ = 80829191853440.

The previous prime is 202102021202017. The next prime is 202102021202089. The reversal of 202102021202020 is 20202120201202.

It is a super-3 number, since 3×202102021202020³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202102021201985 and 202102021202003.

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, 7093026894 + ... + 7093055386.

It is an arithmetic number, because the mean of its divisors is an integer number (8843234113476).

Almost surely, 2^{202102021202020} is an apocalyptic number.

202102021202020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202102021202020 is an abundant number, since it is smaller than the sum of its proper divisors (222373216244828).

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

202102021202020 is a wasteful number, since it uses less digits than its factorization.

202102021202020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67020 (or 67018 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 202102021202020 its reverse (20202120201202), we get a palindrome (222304141403222).

The spelling of 202102021202020 in words is "two hundred two trillion, one hundred two billion, twenty-one million, two hundred two thousand, twenty".