20020020102100 has 72 divisors (see below), whose sum is σ = 46005035989248. Its totient is φ = 7535949964800.

The previous prime is 20020020102029. The next prime is 20020020102157. The reversal of 20020020102100 is 120102002002.

It is a super-3 number, since 3×20020020102100³ (a number of 41 digits) contains 333 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12114595 + ... + 13667605.

It is an arithmetic number, because the mean of its divisors is an integer number (638958833184).

Almost surely, 2^{20020020102100} is an apocalyptic number.

20020020102100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020020102100 is an abundant number, since it is smaller than the sum of its proper divisors (25985015887148).

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

20020020102100 is a wasteful number, since it uses less digits than its factorization.

20020020102100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560625 (or 1560618 counting only the distinct ones).

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

Adding to 20020020102100 its reverse (120102002002), we get a palindrome (20140122104102).

The spelling of 20020020102100 in words is "twenty trillion, twenty billion, twenty million, one hundred two thousand, one hundred".