20212102020 has 48 divisors (see below), whose sum is σ = 61738786368. Its totient is φ = 4899903360.

The previous prime is 20212102013. The next prime is 20212102049. The reversal of 20212102020 is 2020121202.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20212101987 and 20212102005.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15311539 + ... + 15312858.

It is an arithmetic number, because the mean of its divisors is an integer number (1286224716).

Almost surely, 2^20212102020 is an apocalyptic number.

20212102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20212102020 is an abundant number, since it is smaller than the sum of its proper divisors (41526684348).

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

20212102020 is a wasteful number, since it uses less digits than its factorization.

20212102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30624420 (or 30624418 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20212102020 its reverse (2020121202), we get a palindrome (22232223222).

The spelling of 20212102020 in words is "twenty billion, two hundred twelve million, one hundred two thousand, twenty".