202021022001020 has 24 divisors (see below), whose sum is σ = 424254882513168. Its totient is φ = 80806363788800.

The previous prime is 202021022000989. The next prime is 202021022001061. The reversal of 202021022001020 is 20100220120202.

It is a junction number, because it is equal to n+sod(n) for n = 202021022000986 and 202021022001004.

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 7 ways as a sum of consecutive naturals, for example, 127003046 + ... + 128583885.

It is an arithmetic number, because the mean of its divisors is an integer number (17677286771382).

Almost surely, 2^{202021022001020} is an apocalyptic number.

202021022001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202021022001020 is an abundant number, since it is smaller than the sum of its proper divisors (222233860512148).

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

202021022001020 is a wasteful number, since it uses less digits than its factorization.

202021022001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255626461 (or 255626459 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 202021022001020 its reverse (20100220120202), we get a palindrome (222121242121222).

The spelling of 202021022001020 in words is "two hundred two trillion, twenty-one billion, twenty-two million, one thousand, twenty".