202100120020 has 48 divisors (see below), whose sum is σ = 453664447488. Its totient is φ = 75439274240.

The previous prime is 202100120003. The next prime is 202100120077. The reversal of 202100120020 is 20021001202.

202100120020 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 202100119979 and 202100120006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5339044 + ... + 5376763.

It is an arithmetic number, because the mean of its divisors is an integer number (9451342656).

Almost surely, 2^202100120020 is an apocalyptic number.

202100120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202100120020 is an abundant number, since it is smaller than the sum of its proper divisors (251564327468).

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

202100120020 is a wasteful number, since it uses less digits than its factorization.

202100120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10715880 (or 10715878 counting only the distinct ones).

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

Adding to 202100120020 its reverse (20021001202), we get a palindrome (222121121222).

The spelling of 202100120020 in words is "two hundred two billion, one hundred million, one hundred twenty thousand, twenty".