202100021002020 has 48 divisors (see below), whose sum is σ = 575471246253120. Its totient is φ = 52979892510336.

The previous prime is 202100021001979. The next prime is 202100021002043. The reversal of 202100021002020 is 20200120001202.

It is a super-3 number, since 3×202100021002020³ (a number of 44 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 202100021001987 and 202100021002005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28545197167 + ... + 28545204246.

It is an arithmetic number, because the mean of its divisors is an integer number (11988984296940).

Almost surely, 2^{202100021002020} is an apocalyptic number.

202100021002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202100021002020 is an abundant number, since it is smaller than the sum of its proper divisors (373371225251100).

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

202100021002020 is a wasteful number, since it uses less digits than its factorization.

202100021002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57090401484 (or 57090401482 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 202100021002020 its reverse (20200120001202), we get a palindrome (222300141003222).

The spelling of 202100021002020 in words is "two hundred two trillion, one hundred billion, twenty-one million, two thousand, twenty".