20012102020 has 48 divisors (see below), whose sum is σ = 42243566400. Its totient is φ = 7963401600.

The previous prime is 20012102017. The next prime is 20012102069. The reversal of 20012102020 is 2020121002.

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 = 20012101988 and 20012102006.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3172870 + ... + 3179170.

It is an arithmetic number, because the mean of its divisors is an integer number (880074300).

Almost surely, 2^20012102020 is an apocalyptic number.

20012102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012102020 is an abundant number, since it is smaller than the sum of its proper divisors (22231464380).

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

20012102020 is a wasteful number, since it uses less digits than its factorization.

20012102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7108 (or 7106 counting only the distinct ones).

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

Adding to 20012102020 its reverse (2020121002), we get a palindrome (22032223022).

The spelling of 20012102020 in words is "twenty billion, twelve million, one hundred two thousand, twenty".