202102000100020 has 48 divisors (see below), whose sum is σ = 451259991544320. Its totient is φ = 75767109630464.

The previous prime is 202102000099997. The next prime is 202102000100023. The reversal of 202102000100020 is 20001000201202.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202102000100023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1243470304 + ... + 1243632823.

It is an arithmetic number, because the mean of its divisors is an integer number (9401249823840).

Almost surely, 2^{202102000100020} is an apocalyptic number.

202102000100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202102000100020 is an abundant number, since it is smaller than the sum of its proper divisors (249157991444300).

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

202102000100020 is a wasteful number, since it uses less digits than its factorization.

202102000100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487103392 (or 2487103390 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 202102000100020 its reverse (20001000201202), we get a palindrome (222103000301222).

The spelling of 202102000100020 in words is "two hundred two trillion, one hundred two billion, one hundred thousand, twenty".